Maximum warmth for the most extreme conditions.

The Lunasurf 8mm Yamamoto Surf Boot is made from 100% Yamamoto neoprene — warmer and more durable than standard neoprene — delivering serious insulation for surfers who push into the coldest waters on the planet.

Features

• 100% Yamamoto neoprene — warmer and more durable than standard neoprene
• 8mm thickness for extreme cold water
• Grippy sole for traction on your board and on rocks
• Comfortable fit that doesn't restrict movement
• Tested in some of the world's coldest surf spots — Iceland, Scotland, Norway

Trusted by Lunasurf ambassadors in the world's coldest waters.

Lunasurf 8mm Yamamoto Wetsuit Boots

Maximum Warmth for the Coldest Sessions

When winter arrives, your equipment matters more than ever.

The Lunasurf 8mm Wetsuit Boots are built for riders who refuse to let freezing water cut their sessions short. Constructed from 100% Yamamoto #39 Japanese limestone neoprene, they deliver exceptional warmth, outstanding comfort, and premium performance in the harshest cold water conditions.

Whether you're surfing, kitesurfing, wing foiling, windsurfing, SUP, or river surfing, the 8mm is designed to keep your feet warmer for longer, so you can focus on the conditions—not the cold.

Built with 100% Yamamoto #39 Limestone Neoprene

The material beneath your feet is just as important as the wetsuit covering the rest of your body.

That's why every Lunasurf boot is made entirely from 100% Yamamoto #39 Japanese limestone neoprene—one of the world's highest-performing neoprene materials.

Compared to traditional petroleum neoprene, Yamamoto #39:

• Retains significantly more body heat
• Absorbs virtually no water
• Remains lightweight throughout your session
• Stays soft and flexible in freezing conditions
• Resists compression for longer-lasting performance

The result is a boot that stays consistently warm, lightweight and comfortable from your first paddle to your last wave.

Engineered for Extreme Cold Water

Every detail has been designed for demanding winter conditions.

✔ High-top design for extra ankle coverage and a secure overlap with your wetsuit to help minimise water flushing.

✔ Wide reinforced Velcro® strap keeps the boot firmly locked to your foot throughout your session.

✔ Durable high-grip sole provides confident footing across icy rocks, slippery reefs, riverbanks and long walk-ins.

✔ Quick ankle pull loop makes getting your boots on and off easier, even when your hands are cold.

✔ Plush recycled thermal lining traps warmth, dries quickly between sessions, and feels soft against your skin.

✔ Silky smooth outer jersey maximises stretch and flexibility, allowing the boot to move naturally despite its increased thickness.

Every feature has one purpose: keeping you warmer, longer.

Built for the Coldest Conditions

The 8mm is designed for riders who spend their winters in serious cold water.

Ideal for:

• Winter throughout the UK and Ireland
• Scotland
• Norway
• Iceland
• Canada
• Northern Europe
• Any location where water temperatures regularly fall below 8°C

It's also the ideal choice if you naturally feel the cold, spend long hours in the water, or simply want the warmest boot possible.

Many Lunasurf riders choose the 8mm once water temperatures reach around 10°C, preferring warmer feet over thinner boots.

Warm Feet. Better Sessions.

Your feet are usually the first part of your body to feel the cold.

Once they lose warmth, the cold gradually spreads, your energy drops, and sessions become shorter than they should be.

Keeping your feet warm helps your whole body stay comfortable, allowing you to stay focused, surf better, and enjoy more time in the water.

The difference isn't just comfort—it's how long you can keep doing what you came for.

Why Choose the 8mm?

Choose the 8mm if you:

• Regularly surf or ride in water below 8°C
• Spend long sessions in winter conditions
• Feel the cold quickly
• Want maximum warmth without sacrificing flexibility

If your conditions are generally between 7°C and 13°C, or you're looking for a lighter all-round option, the Lunasurf 4mm is the better choice.

Many riders own both—the 4mm for milder conditions and the 8mm when winter really arrives.

Proven in Some of the World's Coldest Waters

Lunasurf boots aren't designed in a warm office and tested once.

They're worn and trusted in the cold waters of Scotland, Norway and Iceland, where freezing air, icy river water and long winter sessions demand equipment that performs when it matters most.

Every design decision has been shaped by real-world cold water experience.

Complete Your Cold Water System

Pair your 8mm boots with a Lunasurf Yamamoto wetsuit, gloves or mitts, and hood for complete cold water protection.

Keeping your extremities warm makes a remarkable difference to comfort, performance, and how long you can stay in the water.

Premium Materials. Maximum Warmth.

The best winter sessions are often the ones few people ever experience.

Cold water. Offshore winds. Empty lineups.

The Lunasurf 8mm Yamamoto Wetsuit Boots are built to help you make the most of them, delivering exceptional warmth, flexibility, and comfort when the conditions are at their coldest.

Shop the Lunasurf 8mm Yamamoto Wetsuit Boots and experience the difference 100% Yamamoto #39 limestone neoprene makes.