O'Neill HyperFreak 4/3+ Steamer Chest Zip Wetsuit – Black

When the water turns cold and the swell is pumping, you need a suit that keeps you warm without slowing you down. The O'Neill HyperFreak 4/3+ Steamer Chest Zip Wetsuit delivers exactly that — a full-winter performer built on the same elite HyperFreak platform, now with extra thermal protection where you need it most.

The 4/3+ thickness rating means 4mm of neoprene through the body for maximum core warmth, with 3mm through the arms and legs to preserve the flexibility that makes the HyperFreak so good to surf in. The arms, back and shoulders are constructed from TB3-X, O'Neill's lightest and most pre-stretched neoprene, while the chest and legs use TB3 — a hydrophobic, maximum-stretch rubber with a featherlight ENVY foam core that retains warmth even when wet. The result is a suit that surfs well beyond what its thickness would suggest.

Entry is handled by the O'Neill FUZE Chest Zip, a free-floating panel system with an anti-flush barrier and drain holes that seals out cold water effectively while remaining easy to get in and out of. Inside, TB3X recycled seams are glued and blind-stitched for a watertight bond with no restriction or pressure points. The minimal seam design uses larger panels throughout, reducing bulk and improving overall fit and movement.

Seamless paddle zones keep things comfortable through every duck dive and paddle out, while the double seal collar adds a second layer of warmth at the neck — a welcome feature when the wind is up. Krypto Knee Padz protect against board wear for long-term durability, and a hidden key leg pocket means you're covered from the car park in.

Like all suits in the HyperFreak range, the 4/3+ is built with meaningful sustainability credentials. Each steamer diverts more than 0.5kg of plastic from the ocean, and the construction incorporates recycled oyster shells, eco carbon black sourced from scrap tyres, limestone-based neoprene (used by O'Neill since 1996), Aqua-Alpha solvent-free lamination glue, and dope-dyed yarn to cut water and energy use in production.

Rated 4.9 out of 5 stars from over 110 reviews, this is the go-to winter steamer for surfers who want HyperFreak performance through the coldest months New Zealand has to offer.

Key Features: TB3-X / TB3 Neoprene · 4mm body / 3mm arms & legs · FUZE Chest Zip · Sealed GBS & Taped Seams · Minimal Seam Design · Seamless Paddle Zones · Double Seal Collar · Krypto Knee Padz · Unfinished Cuffs · Key Leg Pocket · Aqua-Alpha Glue · Sustainably sourced materials