06 de noviembre, 2026

Pick the Right Surfboard Leash

Surfboard Leash Thickness and Length: What Actually Matters

Most surfers grab a leash without thinking twice about its dimensions. That's fine until it snaps during a bad wipeout, or you're dragging extra material through the water and having it impact your performance.

The basic idea: thickness equals strength, and length equals safety. A thicker leash takes more punishment in wipeouts, and works better with bigger, heavier boards. A thinner leash creates less drag, so it’s better for performance surfing as long as the waves aren't too heavy. A leash that’s too short might keep your board too close for comfort during a wipeout, and a leash that’s too long might have you wasting time in the impact zone getting your board back after a bad wipeout. What you need depends on the waves you usually surf and the size and weight of your board. Let’s get into it.

Get the Length Right First

Your leash should be about the same length as your board. Riding a 6'2"? Get a 6-foot leash. Simple, but easy to skip if you're just grabbing whatever's cheapest.

Match Thickness to How You Surf

Comp leashes (5-5.5mm)

These are thin and built for performance. Less material means less drag, so the leash stays light and out of your way. The tradeoff is that they're not made to survive a serious heavy wipeout. Use these for smaller, cleaner conditions where high performance is the goal.

All-round leashes (6-8mm)

This is the middle ground, and where most surfers should land if unsure. Thick enough to handle average to semi-heavy wipeouts without snapping, but not so bulky it slows you down. This is a good option for a mix of conditions.

Big wave leashes (8mm+)

Built thick because they can't afford to snap when waves get serious. Go about a foot longer than usual too. That extra length gives your board room to move away from you during a heavy wipeout. Longboards and heavier, more heavily glassed boards need thicker leashes too. A thin comp leash won't hold the weight of a log through a hard fall. Match the leash to what your board weighs, as well as what the waves are doing.

Bonus Tip: Store It Right

How you store your leash affects how it behaves in the water. Wrap it tightly around itself or coil it on your board between sessions, and it starts holding that curled shape, and a leash that wants to curl is more likely to wrap around your legs while you surf.

So let it hang straight instead. Hang it on a hook, or lay it flat, anything that keeps it from tightly curling. Do this the first time you unpack a new leash too, since most come coiled tight from the factory. Furthermore, when you’re shopping for a leash, make sure that velcro is sticky.

Bottom Line

Match the length to your board and pick the thickness based on your board's weight and the waves you're riding, and size up in both when the surf gets serious or your board choice gets heavier.