Saltwater Monofilament Line

Izorline XXX Super Copolymer Smoke Fishing Line— 1/4lb Spools

When you need a line that disappears in the water column and holds up under pressure, Izorline XXX Super Copolymer Smoke delivers. Engineered with next-generation space-age additives, this monofilament packs exceptional strength into a small diameter — giving you more line on the spool and a stealthy edge over wary fish.

The smoke color is purpose-built for low visibility, making it a go-to for targeting sharp-eyed species like yellowtail, white seabass, and tuna. Whether you're fishing the surf, jigging offshore, or chasing trout in freshwater, XXX Copolymer performs where it counts.

Key Features

• "Xtra" Limp — Soft, supple, and easy to tie reliable knots
• "Xtra" Strong — Izorline's strongest monofilament ever produced
• "Xtra" Tough — Superior abrasion resistance for rocky structure and heavy cover
• Low Memory — Minimal coil and line twist for longer, more accurate casts
• Small Diameter — More line capacity on your reel without sacrificing strength
• Smoke Color — Near-invisible underwater for a stealthy presentation

Specifications

Note: Spools are sold by weight, not line length. Lighter test lines have more yardage per spool due to smaller diameter.

Izorline XXX Copolymer line is a favorite for anglers looking for small diameter, very strong, and low memory line. There is also something about the smoke color that seems to be less visible to fish. We like the fishability of the line and find that it hasn't failed us or our customers. The Izorline XXX Super Copolymer Smoke 1/4lb Spools offer exceptional strength and low memory in a compact diameter, making it a top choice for anglers. Its smoke color also provides a stealthy advantage by being less visible to fish. Experience the superior performance of this line and see why it's a favorite among veteran fishermen. Izorline has combined new space age additives, resulting in a monofilament that is:

• "Xtra" Limp - Soft And Easy To Tie.
• "Xtra" Strong - Our Strongest Mono Ever!
• "Xtra" Tough - Great Abrasion Resistance.

Casting is easy and the low memory makes line management simple and problem free.  The smoke color seems to blend into most water conditions better than other colors.  If you haven't tried it, we highly recommend you do.

When you need a monofilament line that ties easily without giving up strength, Izorline XXX Super Copolymer Clear Fishing Line gives you a broad 2–40 lb size range on 1/4 lb spools. The listing highlights an extra-limp feel, strong construction, low memory, and abrasion resistance, with a clear/smoke presentation that can be less visible to fish.

Tie Cleanly, Fish Confidently

Izorline XXX is built for anglers who want line that is soft and easy to tie, while still bringing the strength and toughness needed for everyday freshwater and saltwater fishing. The wide range of available sizes makes it easier to match the line to your target and setup instead of forcing one compromise size.

When Stiff Line Gets in the Way

High-memory line can make knots and handling frustrating. The XXX Super Copolymer formula is listed as extra limp and low memory, helping the line feel more manageable when you are tying, rigging, or replacing line at the bench.

What It Does Well, and What to Keep in Mind

• Easy handling: The extra-limp construction is soft and easy to tie.
• Durable performance: The listing identifies the line as extra strong and extra tough, with great abrasion resistance.
• Broad selection: Available sizes run from 2 lb through 40 lb.
• Important spool detail: The spool is sold by weight, not by a fixed length of line. Smaller diameters can provide more line on the spool, which is why pricing can vary by size.

The Right Pick If...

Choose Izorline XXX when you want a versatile copolymer fishing line with low memory, easy knot handling, and a size range that covers light freshwater work through heavier saltwater applications. Choose the 1/4 lb spool format when the amount of line you need can vary by diameter.

Best Techniques, Species, and Conditions

The current listing is tagged for freshwater and saltwater fishing, including surf, trout, calico, yellowtail, white seabass, and tuna applications. Match the lb-test option to your target species, tackle, and fishing conditions.

Best For

• Freshwater and saltwater fishing line setups
• Surf fishing and general monofilament applications
• Trout, calico, yellowtail, white seabass, and tuna setups
• Anglers who prioritize low memory, easy tying, strength, and abrasion resistance

Models and Specs

Spool format: 1/4 lb spool. Line type: copolymer monofilament. Listed color: Clear.

Tackle Express Tips

1. Choose lb test by starting with your target species and fishing conditions, then confirm the selected option in the size menu.
2. Use the SKU or UPC in the table when matching a replacement spool or checking a tackle order.
3. Remember that the spool is sold by weight, so line length changes with diameter.

Questions Anglers Ask

What sizes are available?
The current listing includes 2 lb, 4 lb, 6 lb, 8 lb, 10 lb, 12 lb, 15 lb, 20 lb, 25 lb, 30 lb, and 40 lb options.

What makes this copolymer line different?
The listing highlights extra-limp handling, low memory, extra strength, extra toughness, and abrasion resistance.

How much line is on each spool?
The spool is sold by weight rather than a fixed line length. Smaller diameters can place more line on the same 1/4 lb spool.

Need a different spool format? Compare the Izorline XXX Smoke 1lb Spools and Izorline XXX Smoke 1/2lb Spools. For a premium leader option, see the Izorline First String Premium Poly Monofilament Leader Line.

Izorline First String Premium Poly Monofilament Leader Line is the toughest, low stretching, low memory line on the market. Easy to tie, the Izorline First String Premium Poly Monofilament Line  produces superior knot strength and posses abrasion resistant qualities that make it extremely durable.  Offered at a price point that’s easy on the billfold, the Izorline First String Premium Leader is a great deal anyway you cut it. 

Features: 

• High Tensile Strength
• Excellent Abrasion Resistance
• Offered in a Coil or on a Wrist Spool 

Maxima Ultragreen One Shot Monofilament Line is as strong as it comes. Anyone who has used it knows its high breaking strength and exceptional durability with abrasion. The green color is perfect for most lakes as well as inshore ocean fishing. It's soft and limp and casts well but a little KVD Line and Lure Conditioner makes it even better. So strong, it should come with a warning label! Its exceptional durability and high breaking strength make it the go-to for any angler. Plus, its green color blends in seamlessly with most lakes and inshore ocean fishing. And don't worry about any stiffness, it casts like a dream. But if you really want to step up your game, add a little KVD Line and Lure Conditioner and watch those fish bite!

220 yards

Green Color

The Line SoCal Anglers Trust

Izorline XXX has earned its reputation on the water — not in a marketing brochure. Veteran long-range and local sportboat anglers have relied on it for decades because it delivers where it counts: small diameter for more line on the spool, exceptional knot strength, and a smoke color that disappears in the water column. If you're fishing yellowtail, tuna, or white seabass, this is the line that won't let you down when the fish of a lifetime is on the other end.

What Makes XXX Different

Izorline engineered the XXX formula with space-age copolymer additives that push monofilament performance beyond what standard mono can deliver. The result is a line that's simultaneously limp enough to cast effortlessly, strong enough to handle hard-running pelagics, and tough enough to survive the rocks and structure where big fish live.

• Xtra Limp — soft, easy to tie, minimal coil memory off the spool
• Xtra Strong — Izorline's strongest mono formula, with high knot and tensile strength
• Xtra Tough — excellent abrasion resistance for rocky structure and kelp
• Smoke color — low visibility in the water column, a proven edge on pressured fish
• Small diameter — more line per spool, better bait presentation

When Line Visibility Costs You Fish

Clear water and pressured fish are unforgiving. Heavy, stiff, or high-visibility line kills bait action and spooks wary fish — especially white seabass and finicky yellowtail. The XXX's smoke color and ultra-limp formula let your bait swim naturally and your line stay out of the picture. It's the difference between getting bit and watching the fish swim away.

The Right Choice If…

• You're fishing live bait on local or long-range sportboats
• You want a mono that casts smoothly and ties clean knots without stiffness
• You're targeting clear-water species like white seabass, yellowtail, or tuna
• You need maximum yardage on your reel without stepping up in diameter
• You've been burned by cheap mono that breaks at the knot or loses strength after a few trips

At Home In These Situations

• Live bait fishing for yellowtail, tuna, and white seabass
• Slow-trolling and drift fishing on local and long-range trips
• Jigging and iron fishing as a main or backing line
• Freshwater applications where low-vis and low-memory matter

Best Conditions

• Clear saltwater — inshore, nearshore, and offshore
• Long-range and overnight sportboat trips
• Kelp and structure fishing where abrasion resistance is critical
• Any situation where fish are line-shy or water clarity is high

Best For

• Yellowtail, bluefin tuna, yellowfin tuna, and albacore
• White seabass and calico bass on live bait
• Freshwater bass, trout, and general light-tackle applications
• Anglers who want a premium copolymer without the premium price tag

Key Features

• Formula: Super Copolymer with space-age additives
• Color: Smoke (low-visibility)
• Spool size: 1lb
• Available test strengths: 20lb, 25lb, 30lb, 40lb
• Properties: Xtra Limp, Xtra Strong, Xtra Tough
• Low memory, small diameter, high knot strength

Models & Specs

Tackle Express Tips

• Spool under light tension with water or a damp cloth to reduce memory and ensure even lay on the reel — especially important on larger capacity reels.
• The smoke color is most effective in clear, blue water. If you're fishing green or murky water, the visibility advantage is less critical — but the strength and limpness still make it a top pick.
• For long-range trips, the 1lb spool gives you enough line to fill most conventional reels and have backup. Buy two if you're spooling a large-capacity reel like a Talica 20 or 25.

FAQ

Is Izorline XXX a monofilament or fluorocarbon?
It's a super copolymer — a step above standard monofilament in strength and limpness, but not fluorocarbon. Many anglers use it as their main line with a fluorocarbon leader for the best of both worlds.

What reel sizes does the 1lb spool fill?
Capacity varies by test strength. The 20lb/2,670yd spool will fill most mid-size conventional reels. Refer to your reel's line capacity specs and the yardage table above to match the right test to your setup.

Can I use this line for freshwater fishing?
Yes — the low memory, small diameter, and smoke color make it an excellent choice for freshwater bass, trout, and other species where line visibility and castability matter.

• STRONGEST LINE IN ITS CLASS
• OUTSTANDING ABRASION RESISTANCE
• DELIVERS INCREASED STEALTH AND INVISIBILITY
• UNMATCHED TOUGHNESS UNDER ALL CONDITIONS

Izorline First String Clear Wind-On Top Shots are the fastest, Stronest, and easiest way to connect Spectre/Braid to Mono. There is a small learning curve to fishing Wind-On Top Shots.

Izorline First String Clear Wind-On Top Shots have a spectra loop on the end so you're going to need to serve a loop in your hollow core spectra to make the loop to loop connection and if you do not have hollow core then, you'd have to tie a Bimini twist loop in the end of your solid spectra to make the right connection.

A Wind-On Top Shot is one of the most in-line connections from braid to mono making it virtually silent and smooth going through the guides on the rod. Also a Loop to Loop connection is the strongest connection for spectra to mono.  Some anglers like monofilament over fluorocarbon because monofilament has more stretch.  That stretch acts like a rubber band and give a shock absorber when a fish trashes or changes direction quickly.  Fluorocarbon is harder for the fish to see and is generally better during the daytime hours.

Standard Top-Shot sizes:
LBS TEST            FIRST STRING
                                 CLEAR
25                         50yds or 125yds
30                         50yds or 125yds
40                         50yds or 125yds
50                         25yds or 50YDS 
60                         25yds or 50YDS
80                         25yds or 50YDS or 100yds
100                       9yds or 25yds or 50YDS or 100yds
135                       25yds or 50YDS or 100yds
150                       25yds or 50YDS or 100yds
200                      25yds or 50YDS or 100yds
300                      25yds or 50YDS or 100yds
400                      25yds or 50YDS or 100yds

Berkley's Big Game Monofilament Leader Spool! At 55 yards, this leader material is both budget-friendly and tough enough for your wildest fishing adventures. Plus, knot tying becomes a breeze thanks to this line's easy maneuverability.

• EXTREME FIGHTING POWER IN A RELIABLE MONO LEADER MATERIAL
• Extreme Shock Strength
• Excellent Abrasion Resistance
• High Knot Strength

Ande Monofilament Leader line is perfect for short or medium size top shots or leaders.  We like Ande line for it's strength and low memory.  The abrasion resistance is fantastic reducing the change of breaking off on toothy creatures including bluefin tuna.

The old sayhing about Ande Line is "Andy is dandy because it's rubber-bandy."  The stretch in this line is amazing and is known as an insurance policy on big fish.  The more the line stretches, the less chance of it breaking.  It simply rebounds to it's previous self during the fight.  That said, after you catch a big fish you should change your leader out.

P-Line Original Line features a smaller diameter, decreased memory, and a suppleness that makes heavy leaders easier to fish.  The decreased line diameter gives anglers an improved line capacity without compromising strength or abrasion resistance. Popular with both Freshwater and Saltwater anglers alike, the P-Line Original Line delivers an improved co-polymer with unparalleled durability and an enhanced performance. 

Color: Smoke Blue

P-Line's fast adoption with P-Line CXX 1/4lb Spool Crystal Clear as the best co-polymer line can be attributed to its diverse versatility. From Bass fishermen who appreciated its natural green hues for stained waters and its crystal clear coloring for clear water bodies to its incredible abrasion resistance when navigating around structures, P-Line garnered a wide-spread appeal.

Saltwater anglers were also impressed by its strong knot strength and low stretch, while trout anglers noted its strength-to-line diameter ratio. When it comes to catching a big trout, yellowtail, cobia, or calico bass around a sticks or rocks, anglers trust the immense strength of P-Line to get them the catch they're after.

P-Line's fast adoption with P-Line CXX Moss Green as the best co-polymer line can be attributed to its diverse versatility. From Bass fishermen who appreciated its natural green hues for stained waters and its crystal clear coloring for clear water bodies to its incredible abrasion resistance when navigating around structures, P-Line garnered a wide-spread appeal.

Saltwater anglers were also impressed by its strong knot strength and low stretch, while trout anglers noted its strength-to-line diameter ratio. When it comes to catching a big trout, yellowtail, cobia, or calico bass around a sticks or rocks, anglers trust the immense strength of P-Line to get them the catch they're after.

Moss green

260 Yards

P-Line CXX X-Tra Strong Smoke Blue is an abrasion-resistant copolymer fishing line offered in quarter-pound spools. Choose your pound test and check the yardage below: the amount of line varies by strength. Smoke Blue is the color supplied by this listing.

Features and specifications

• Line type: copolymer monofilament.
• Color: Smoke Blue.
• Spool format: 1/4 lb; this describes the spool offering, not the line's breaking strength.
• Use: mainline for freshwater or saltwater setups matched to the chosen pound test, tackle and cover.
• Abrasion resistance: a useful consideration when fishing near structure; inspect the line regularly for damage.

Pound test and spool yardage

• 10 lb — 600 yards
• 12 lb — 600 yards
• 15 lb — 600 yards
• 20 lb — 600 yards
• 25 lb — 500 yards
• 30 lb — 400 yards
• 40 lb — 370 yards

Choosing a spool

Start with your rod's line rating and reel's capacity guidance. Consider the lure weight, fish you are targeting and how much cover the line may contact. Heavier line takes up more spool space, so check capacity before moving up in pound test. Set your drag for the complete outfit and knot strength rather than assuming abrasion resistance makes the line unbreakable.

3 Tackle Express Tips

1. Plan your fill. Compare the selected spool's yardage with your reel capacity; do not assume every quarter-pound spool contains 600 yards.
2. Check after contact. Run the working end gently between your fingers after rubbing rocks or wood, then cut back past any roughened section.
3. Seat knots carefully. Moisten the knot, tighten it smoothly and pull-test it before fishing. Retie if the line looks kinked or damaged at the connection.

Frequently asked questions

Is CXX a fluorocarbon line?

No. P-Line identifies CXX as a copolymer. This listing is not a 100% fluorocarbon line.

Does every spool contain 600 yards?

No. The 10–20 lb options contain 600 yards, 25 lb contains 500 yards, 30 lb contains 400 yards, and 40 lb contains 370 yards.

What does 1/4 lb mean in the product name?

It identifies the quarter-pound spool format. Select the separately listed pound test for your fishing setup.

Can I choose a different color here?

This page is for Smoke Blue. All strength options on this listing are that color.

Triple Fish Camo Monofilament Leader 50Yds offers anglers high-performance reliability with exceptional knot strength and abrasion resistance. Crafted in Europe by Filkemp S.A., it excels with both spinning and conventional reels, providing versatility across techniques like bottom fishing, wreck fishing, trolling, and shore casting. This leader line supports targeting big game while maintaining excellent value, helping you land more fish confidently and cost-effectively.

Key Features

• High Knot Strength: Securely ties to lures, hooks, and leaders, reducing break-offs during intense fights.

• Abrasion Resistance: Withstands tough conditions like rocky bottoms, wrecks, and surf fishing.

• Versatile Performance: Ideal for multiple fishing styles, including trolling, topwater casting, and bottom fishing.

• Economical Value: European-made quality at a budget-friendly price, perfect for weekend warriors.

• Color Options: Available in Clear for low visibility, Camo for blending in murky waters, and Pink for high-visibility casting.

• Spool Sizes: Offered in 1/4 lb, 1 lb, 2 lb, and 5 lb spools to suit various fishing needs.

P-Line's fast adoption with P-Line CXX 1/4lb Spool Moss Green as the best co-polymer line can be attributed to its diverse versatility. From Bass fishermen who appreciated its natural green hues for stained waters and its crystal clear coloring for clear water bodies to its incredible abrasion resistance when navigating around structures, P-Line garnered a wide-spread appeal.

Saltwater anglers were also impressed by its strong knot strength and low stretch, while trout anglers noted its strength-to-line diameter ratio. When it comes to catching a big trout, yellowtail, cobia, or calico bass around a sticks or rocks, anglers trust the immense strength of P-Line to get them the catch they're after.

P-Line's fast adoption with P-Line CXX Crystal Clear as the best co-polymer line can be attributed to its diverse versatility. From Bass fishermen who appreciated its natural green hues for stained waters and its crystal clear coloring for clear water bodies to its incredible abrasion resistance when navigating around structures, P-Line garnered a wide-spread appeal.

Saltwater anglers were also impressed by its strong knot strength and low stretch, while trout anglers noted its strength-to-line diameter ratio. When it comes to catching a big trout, yellowtail, cobia, or calico bass around a sticks or rocks, anglers trust the immense strength of P-Line to get them the catch they're after.

Crystal Clear

260 Yards

Berkley Trilene Big Game Monofilament Clear Leader formula is made for handling jaw-dropping shocks and shrugging off toothy fish attacks with its unbeatable shock strength and abrasion resistance. Whether you need 100 or 150 pound test, we've got you covered.

• Berkley Trilene Big Game is heavy duty leader material that offers extreme fighting power in a reliable monofilament material.
• Extreme shock strength to absorb vicious strikes.
• Excellent abrasion resistance, even against the toothiest of fish.
• High knot strength.
• Available in 100 and 150 pound test.

SPRO's Slow Pitch Assist Mono features a monofilament core that offers superior stiffness and abrasion resistance compared to fluoro, as well as two colors and sizes to suit your preferences. Each package includes 6m of cord for tying.  Make your own assist hooks and determine your length and style to fit the jig you're using.