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Swapping the hood to match the conditions is what the Mutant series is about. The Mutant 4/3+ Chest Zip Full w/Hood uses the O'Neill Modular Chest Zip, where neck and hood are interchangeable without tools, and it comes in black.
4/3+ is neoprene thickness: 4 mm across the torso, 3 mm through arms and legs, plus half a millimetre of extra material for warmth. Chest, back and legs use recycled TechnoButter 3, while the arms and the entry panel run TB3X for more stretch. The modular closure is the heart of the system. Hood and neck share a single seal, so you can ride hooded on the coldest days and open when the water softens, all in one suit. The shoulders use a seamless contortionist design that does not bind while paddling. Tapered cuffs at the wrists and ankles carry plasma seals to slow flushing. Seams are triple glued and blindstitched with exterior Fluid Seam Weld technology. There is a key pocket with loop, and lamination is solvent free Aqua Alpha.
- Modular chest zip: neck and hood interchange
- Single shared seal: one suit, two seasons
- Seamless shoulders: no drag while paddling
- Plasma wrist and ankle seals: less water entry
- Exterior Fluid Seam Weld: sealed, durable seams
- Recycled TechnoButter 3: light core warmth
- TB3X in the arms: free shoulder movement
Mutant suits anyone who would rather not own two winter suits. Hooded it is a proper cold water rig, and without the hood it is an ordinary 4/3 that carries you well into spring.
O'Neill Wetsuits, Men
O'Neill · Men
Sizes are a guide. The measurements come from the manufacturer and can vary between models.
You have 14 days to change your mind, counted from the day you receive your order. You do not need to give a reason.
- Tell us first
- Send us an email at info@oneopensky.dk within the 14 days. Refusing the parcel at the door does not count as a cancellation.
- Send the item back
- Within 14 days of telling us, to One Open Sky, Golfvej 10, 7400 Herning, Denmark. Mark the parcel Web Return.
- Return shipping
- Ordinary parcels come with a return label. Sending the item back costs the same as the delivery.
- Condition
- Try the item the way you would in a shop. If it has been used beyond that, we may reduce the amount we refund. Please use the original packaging.
- Your money back
- Within 14 days of your message, to the same payment method you used. We may wait until the item is back with us.
- Not covered
- Items made or adjusted for you, for example bindings mounted on your skis.
- Return in store
- You can also hand the item in at our shops in Herning or Copenhagen. The money goes back the same way you paid.











