HyperFire X 3/2mm Steamer Chest Zip Wetsuit

The top of the Hyper Series — O'Neill's most advanced suit, full stop. If you chase powerful waves in genuinely cold water and refuse to compromise on warmth, dryness or flex, this is the one. ($699.99)

Key Features

• TB4 Air Firewall chest and back panels that trap air pockets to hold heat and cut wind chill
• Graphene-infused Fire Wall lining that reflects body heat and, per O'Neill, dries in under about 30 minutes
• TB4X superstretch upper body + TB4 lower body for explosive, unrestricted paddle power
• FUZE chest-zip entry with anti-flush barrier and drain holes
• External Fluid Weld seals + internal taping — double-sealed against flushing
• Minimal-seam design and Double Seal Collar for comfort and locked-in warmth
• External key pocket with loop, built in the O'Neill Blue eco program

Details

• Thickness: 3/2mm (3mm core / 2mm arms & legs)
• Neoprene: TB4X superstretch upper; TB4 lower; TB4 Air Firewall chest/back panels
• Lining: graphene-infused Fire Wall
• Seams: external Fluid Weld seals + internal taping
• Entry: FUZE chest zip
• Collar: Double Seal Collar
• Features: external key pocket with loop
• Eco: recycled oyster shells, plastic bottles, car tyres; solvent-free lamination; dope-dyed yarn; eco-limestone neoprene
• Colour: Black

Who It's For

• Committed cold-water surfers who want the warmest, driest suit in the range
• Performance surfers chasing power waves who won't trade flex for warmth
• Anyone stepping up to a premium, long-haul winter suit
• Surfers who prioritise fast dry-time between back-to-back sessions

Sizing

Sizes run S, MS, M, LS, L, XL, XLS. The base letter is chest/girth (S/M/L/XL); the S/T suffix tunes for height (S = shorter, T = taller) at that chest. A 3/2 is 3mm through the core for warmth and 2mm in the arms and legs for movement, with the Air Firewall panels adding cold-water insulation — a rough guide of around 14–19°C, a strong cool-to-cold winter pick. This is a FUZE chest-zip suit. For the seals and Firewall panels to do their job the fit must be snug all over — no gaps at the lower back, wrists or ankles, or you'll flush and lose the warmth you paid for. Sizing follows O'Neill's official men's chart — match your height, weight and chest to your size code and you're sorted.

Stuck between two sizes? Go down a size. Still not sure? Get in touch and we'll help you nail the fit.