Warm. Free. Unstoppable.
The Lunasurf Alpha 4/3 Front Zip Mens Wetsuit is built for surfers who want more from the water — more warmth, more movement, more time in the surf. It moves with your body, not against it — so you can focus on the surf, not the suit.
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.
📦 Free shipping on all wetsuits.
Effortless to take on and off. Easy front entry mini slant zip system, which dislocates making it easier to open up the entry and get in to your suit with ease. No unnecessary bulky zipper — our mini zipper means no unbalanced restriction or area of tension. Securely held closed with a popper.
Quick drying, comfortable, and silky smooth — our recycled thermal 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.
Every seam has been glued and blind-stitched to reduce water entry and deliver excellent durability. Seams and panels have been strategically designed with flexibility and mobility as the focus — making for a non-restricting, comfortable wetsuit.
A thin, comfortable 4-way high-stretch neoprene tape placed on all interior seams, minimising water entry and maximising warmth retention.
Lightweight, strong, abrasion resistant, high stretch neoprene knee panels. Superior comfort, flexibility and durability.
Crafted entirely from premium Yamamoto limestone neoprene — warmer, softer, and more durable than standard neoprene. Superior thermal retention, reduced water absorption, and faster drying between sessions.
The ideal all-rounder for cool to cold conditions. Warm enough for winter, flexible enough for year-round performance.
This is a suit built for surfers who don't check the temperature — they check the charts.
Pairs well with
Alpha 4/3 Front 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.
Shipping Information
All wetsuits have FREE shipping worldwide.- All orders over £100 FREE shipping within the UK.
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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Quick Dry Lining
Glued & Blind Stitched (GBS)
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.
4-Way Stretch Tape
A thin comfortable 4-way high stretch neoprene tape. Placed on all interior seams minimising water entry and maximising warmth retention.
Dislocating Mini Zip
Effortless to take on and off. Easy front entry mini slant zip system, which dislocates making it easier to open up the entry and get in to your suit with ease. No unnecessary bulky zipper, our mini zipper means no unbalanced restriction or area of tension. Securely held closed with a popper.
Durable Knee Pads
Lightweight, strong, abrasion resistant, high stretch neoprene knee panels. Superior comfort, flexibility and durability
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.
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.
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.
Sustainability
Canola 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.
Petroleum Oil
Is expected to be depleted in next 50 years. Limestone, on the other hand, can be utilized for a wetsuit material semi-permanently.
Renewable Energy Sources
When making CR 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.
Longer Product Lifetime
As CR is excellent at performance such as weather resistance, CR wetsuits last longer.
One of the most eco-friendly ways to achieve sustainability is to use one product for a longer time in order to facilitate that the product has to last longer.
Ocean Polution
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.
Please read our FAQs page to find out more.
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.
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.
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.
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.
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 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.
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.
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
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.
Overall rating: 4.888889 / 5 from 9 reviews.
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"Very happy with the wetsuit, well made and finished, MT fit is perfect for 6’1 and 12st. My only complaint is the website should be clearer about VAT. It says on the homepage that 'prices exclude UK VAT' but I think it would be better if it just said just say 'prices exclude any VAT.’ This suit actually cost €384 by the time it got to me not €292 as listed."
"I really love this wetsuit - so comfortable - doesn’t feel like you’re wearing anything and very good quality."
"No key pocket , suit is warm and flexible"
"It is like wearing a Technical underwear for offshore sailing or skiing Lovely freedom feeling As flexible as a 3/2 as warm as a 5/4. Hard to expect more for a wetsuit ."
"Weightless feel to this suit for a 3/2. Very impressed and arrived next day here in the UK."
"The Luna wetsuit is very good, I like how simple the wetsuit is built, there is no bullshit materials on the inside, no need for. This Yamamoto neoprene is amazing: so warm."
"Warm & flex. Perfect."
"Flex and warm : all what need !"
"Recieved within 24 hours of order in England. The quality of all my Lunasuits has been excellent. A very easy to use service."
