Core-X 6/4 Hooded Arc Zip Mens Wetsuit Yamamoto
Introducing A New Standard in Cold-Water Performance
What if your wetsuit never held you back?
No pull. No restriction. No stiffness halfway through your best session. No flushing. Just you, the wave, and total freedom of movement — from the first paddle to the last wave.
The Lunasurf Core-X ARC-Zip is built for surfers who want more from the water — more waves, more flow, more time in the surf. It moves with your body, not against it. Pop up faster. Turn sharper. Paddle longer. Every movement feels natural, easy, and unrestricted. And when the session's over, you'll wonder why you ever settled for anything less.
At Lunasurf, we believe the best wetsuit is the one you forget you're wearing. Light. Warm. Unrestricted. Built to move exactly as your body moves in the water — so you can focus on the surf, not the suit.
📦 Free shipping on all wetsuits.
The ARC-Zip Entry System
Instead of a straight zipper pulling across the shoulders, the ARC-Zip follows a smooth, ergonomic arc that sits away from high-movement zones — just pure, unrestricted movement.
The ARC-Zip is designed for effortless entry and exit — fast, frustration-free, and secure. It seals completely across the shoulders, locking warmth in and preventing cold-water flushing, without any of the restriction you'd expect from a traditional zip system.
Unrestricted Movement = Better Surfing, For Longer
- Increased paddling efficiency
- No shoulder bind or tightness
- No choking or pressure around the neck
- A lightweight, low-profile fit
Anatomically Engineered Fit
Built using 3D anatomical body paneling designed to mirror natural human movement. Each panel works with your body, not against it — creating a second-skin feel that stays comfortable in and out of the water.
Warmth Without Bulk
Constructed entirely from 100% premium Yamamoto limestone neoprene — warmer and more durable than standard neoprene — the Core-X ARC-Zip offers industry-leading warmth, softness, and stretch without unnecessary thickness or weight.
Core-X 6/4 Hooded Arc Zip – Built for Serious Winter Surfing
The Core-X 6/4 Hooded Arc Zip isn't just another winter suit. Made from premium Yamamoto limestone neoprene, it delivers:
- Maximum thermal retention for serious winter surfing
- Lightweight flexibility despite the extra thickness
- Reduced water absorption
- Faster drying between sessions
Integrated Hood with Lip Warmer
The built-in hood locks in heat and reduces flushing around the neck. The integrated lip warmer is an extended neoprene flap that shields your lips and lower face from wind chill and freezing water. Flip it up when you need it, tuck it under your chin when you don't. A premium feature found on serious cold-water wetsuits.
This is a suit built for surfers who don't check the temperature — they check the charts.
6/4 Thickness
Maximum warmth for serious winter surfing. Maximum freedom of movement, uncompromised.
Pairs well with
Core-X 6/4 Hooded Arc Zip Mens Wetsuit Yamamoto
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
All wetsuits have FREE shipping worldwide.- All orders over £100 FREE shipping within the UK.
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Taxes & Duties
All prices shown are excluding VAT. UK customers will have VAT added at the checkout for the EU and the rest of the world you will pay you local VAT upon import.
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Contact Us
1. Lunasurf ARC ZIP is an Ergonomically designed zip panel which increases range of motion with minimal layers around neck and shoulder region reducing fatigue, whilst enhancing movement with ease and comfort.
2. Larger entry makes the wetsuit easier to get on and off than compared to any front zip on the market.
3. Completely seals the wetsuit unlike chest zip wetsuits giving added protection against flushing.
Neoprene flap that covers the lower part of the face to provide extra warmth in freezing conditions. It helps prevent painful "frozen lips" and protects against wind chill. Can be moved under the chin when not needed.
Lightweight, strong, abrasion resistant, high stretch neoprene knee panels. Superior comfort, flexibility and durability
Every seam has been glued and blind-stitched to reduce water entry and have excellent durability. Seams and panels have be strategically designed with flexibility and mobility as the focus Making for a non restricting comfortable wetsuit.
Our outer lining is designed to dry quick.
1. Lunasurf ARC ZIP is an Ergonomically designed zip panel which increases range of motion with minimal layers around neck and shoulder region reducing fatigue, whilst enhancing movement with ease and comfort.
2. Larger entry makes the wetsuit easier to get on and off than compared to any front zip on the market.
3. Completely seals the wetsuit unlike chest zip wetsuits giving added protection against flushing.
Neoprene flap that covers the lower part of the face to provide extra warmth in freezing conditions. It helps prevent painful "frozen lips" and protects against wind chill. Can be moved under the chin when not needed.
Lightweight, strong, abrasion resistant, high stretch neoprene knee panels. Superior comfort, flexibility and durability
Every seam has been glued and blind-stitched to reduce water entry and have excellent durability. Seams and panels have be strategically designed with flexibility and mobility as the focus Making for a non restricting comfortable wetsuit.
Our outer lining is designed to dry quick.
Quick drying, comfy, thermal recycled lining makes for a snug, warm, lightweight, high performance wetsuit. We believe that to make a great wetsuit you need the best eco aware materials.
A thin comfortable 4-way high stretch neoprene tape. Placed on all interior seams minimising water entry and maximising warmth retention.
Quick drying, comfy, thermal recycled lining makes for a snug, warm, lightweight, high performance wetsuit. We believe that to make a great wetsuit you need the best eco aware materials.
A thin comfortable 4-way high stretch neoprene tape. Placed on all interior seams minimising water entry and maximising warmth retention.
Freedom where it matters. Zero restriction. Pure connection.
Luna ARC-Zip Wetsuit
The Luna ARC-Zip is one of those game-changing designs that lets comfort, freedom, and performance come together from your very first paddle-out.
Engineered for effortless movement
ARC-Zip Entry System
ergonomic mini-zip follows a smooth arc across the chest, away from the shoulders. The result: no pulling, no pressure, no resistance—just almost weightless range of motion.
- Easy On, Easy Off: Significantly easier to enter and exit than traditional front-zip wetsuits, especially for surfers with tired or restricted shoulders. The large entry hole making for frustration-free changes.
- Zero-Flush Seal: Shoulder-to-shoulder closure locks in warmth and keeps cold water out.
- Unrestricted Movement: Fewer seams and lighter layers around the neck and shoulders boost paddling efficiency and upper-body mobility.
Anatomical Fit & Premium Warmth
3D body paneling moves naturally with your body for a second-skin fit. Made from 100% YAMAMOTO Limestone Neoprene, it’s soft, ultra-stretchy, lightweight, and warm—without bulk or restriction.
Less bulk. More freedom.
Once you wear the Luna ARC-Zip, you’ll forget it’s even there. Surf longer, move freer, stay loose, warm, comfortable - and stoked - through every session.
Tech Specs
Yamamoto #39
Super Light Weight ECO friendly Non-Petroleum based Japanese limestone neoprene with the perfect balance between warmth, stretch and durability.
Rubber made from the purest Japanese limestone.
The limestone that YAMAMOTO use is sourced from Mt. Kurohime, which stores billion tons of the purest Japanese limestone. Out of such purest limestone, YAMAMOTO only uses the highest-grade limestone, containing 99.7% of calcium carbonate.
Nitrogen Gas Infused Closed Cell
The closed cells are packed together at an extremely high density and each individual cell is filled with nitrogen gas to prevent water penetration and increase heat retention. The nitrogen closed cell content is over 93% — over 30% higher than most competing materials — and with virtually no water absorption means the weight of this rubber remains nearly identical in wet or dry conditions, giving you more warmth than thicker wetsuits without the weight.
Honeycomb Structure
Yamamoto Corporation’s neoprene rubber is classified as (CR) “chloroprene rubber.” The special rubber incorporates an independent closed cell structure which adds high functionality including super light weight, high heat‐retention with good flexibility neoprene.
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Sustainability
Our mission, create Affordable, Durable ECO friendly wetsuits.
100% Japanese Limestone Neoprene
Our wetsuits are crafted from environmentally conscious 100% Japanese Limestone Neoprene from Yamamoto.
The limestone is made from Mt. Kurohime which stores billion tons of the purest limestone.
From the purest limestone, YAMAMOTO only uses the highest-grade limestone, containing 99.7% of calcium carbonate.
Zero Petroleum Based Oil
Although certain amount of oil is needed to make soft rubber foam, YAMAMOTO stopped using petroleum-derived oil. Instead, YAMAMOTO uses food-grade pure Canola oil, which is widely used as Tempura oil in Japan for sustainability and safety.
Renewable Energy
When making CR neoprene from limestone, it requires a lot of energy. To reduce environmental impact, most of the energy used comes from renewable energy sources such as hydroelectricity.
Protecting our Oceans
Our beautiful blue sea is now in danger of being covered by marine debris.
It is estimated that there are 150 million tons of plastic waste in the ocean and at least 8 million tons are flowing in the ocean annually. Reference: WWF Japan WEB site "About marine plastic problems"
YAMAMOTO is working on recycled jersey materials to reduce pollution of the ocean and to let more people to be aware of this issue. It is estimated that the number of marina debris is going to exceeds the one of fish in 2050.
YAMAMOTO will continue to work on solutions to conserve our beautiful ocean.
FAQs
Please read our FAQs page to find out more.
Is a all 4mm hooded wetsuit ok for UK winters?
Yes the 4mm hooded was designed for UK winters. Men and Women in Iceland, Norway and Scotland are doing full winters purely in the Lunasurf all 4mm hooded wetsuit. If you are prone to the cold you could always opt for the Lunasurf 5.4mm or 6.4mm hooded wetsuit.
Is my wetsuit fitting right?
A wetsuit is supposed to be tight, skin tight. But not so tight that your range of motion is inhibited or restricts your breathing. The sleeves (if full-length) should fall at the wrist bone and the legs just above the ankle, and there should be no gaps, pockets, or rolls of neoprene. Wetsuits are meant to be form fitting. You don’t want loose folds of neoprene, or large pockets of air or water in your wetsuit.
Do wetsuits stretch with use?
When you are first trying it on dry it is important to understand that once a wetsuit has been used a few times it will loosen up and feel more comfortable. With use the wetsuit will stretch to your body becoming form fitting.
What countries do you ship to?
We offer FREE standard shipping worldwide on all wetsuits. You will also have the option to upgrade to premium DHL paid service for an express delivery.
Do you offer a warrantee on your wetsuits?
Yes we offer a 12 month warranty on materials and manufacturing, We do not cover misuse, fin cuts or any damage caused by hitting the reef.
We do the wrists feel tight?
We have designed our wetsuit wrists to prevent flushing or ripping (when wearing thick 7mm gloves/mitts). This means initially they could feel tight but they will loosen with use. You can also gently pull the wrists to widen/loosen.
I have long hair will it fit in the hood?
Yes it will fit in the hood. The most comfortable way is with a low bun rather than on the top of the head.
How do I care for my wetsuit?
Wash it out with clean, cold water after every surf. Hang dry from the waist try to avoid hanging from the shoulders on a hanger. Don't dry it out in direct sunlight, Don't machine wash/dry, Don't use detergents.
Can I return my wetsuit
Yes providing that the wetsuit has NOT been used or damaged. You are welcome to swap sizes if you didn't get it right first time. Return postage is your responsibility
How do wetsuits work?
Lunasurf Wetsuits are awesome things, with today’s technology we can stay warm and have fun in the coldest of conditions. You can feel light, loose and warm unlike the wetsuits of yesteryear. Our wetsuits are 100% made using only the best Yamamoto Japanese limestone based neoprene's. That are then lined with a water/wind repelling buttery, stretchy lining that insulates you from the cold water water, air temps and winds. Your Wetsuit is made up of panels of Neoprene. Wetsuits are not designed to keep you entirely dry. A small amount of water gets trapped between your body and the neoprene. Your body temperature then heats up this small amount of water giving you a nice warm feeling. This is why finding the correct fitting Wetsuit is absolutely essential. Heat does eventually escape through the neoprene but very much like clothing the thicker the Neoprene the warmer you will be.