O'Neill Hyperfreak Chest Zip Full Wetsuit 4/3+ Black Preto

The Story

The Hyperfreak line came out of one obsession: making a 4/3mm suit feel like nothing at all. O'Neill built it around its exclusive TechnoButter foams, and this Plus version pushes that idea further — a 20% lighter formula with 30% less water absorption, sealed against the cold with fully taped seams instead of relying on bulk.

Details

• Neoprene: Limestone-based neoprene with Aqua Alpha solvent-free lamination. TechnoButter 3 covers the body and legs (20% lighter, 30% less water absorption, quick-dry), while featherlight TechnoButter 3X sits over the arms and shoulders.
• Thickness: 4/3mm — 4mm over the torso, 3mm over the arms and legs. The “+” adds 0.5mm extra thickness for more warmth without a heavier suit.
• Seams: Glued and blind stitched (GBS) with TB3X fully taped seams, a super minimal seam design and Sidewinder S-curve seams — watertight construction that still bends when you paddle.
• Entry: F.U.Z.E. chest zip with a free-floating zipper that keeps water out and leaves your shoulders unrestricted. Double Super-Seal neck and a 360° barrier with drain holes at the ankles.
• Stretch & paddle zones: Contortionist seamless shoulders and strategic seamless paddle zones, so the material stretches exactly where your stroke needs it.
• Durability: Ergonomic Krypto knee pads and an external key pocket with a secure loop.
• Warmth: The 4/3mm thickness, 0.5mm of extra neoprene and taped, watertight seams make this a cold-water suit rated for water temperatures of 8–17°C.

Panel count and specific lining names are not yet on file — this section will be updated once O'Neill's full spec sheet is available.

Fit & Size Guide

Available in sizes S, ST, MS, M, MT, LS, L, LT and XL.

Wetsuits should sit snug everywhere: no air pockets or gaps at the neck, wrists or knees. If you're between sizes, the fit should feel tight dry — neoprene loosens slightly once it gets wet.

Shipping

Orders ship across the EU. Delivery times and rates are shown at checkout, and you have 30 days to return your order.

FAQ

What does the “+” in 4/3+ mean?

The Plus version adds 0.5mm of extra neoprene thickness compared to a standard 4/3mm suit, giving you noticeably more warmth in the same flexible construction.

What water temperature is this suit made for?

O'Neill rates this Hyperfreak 4/3mm for water between 8°C and 17°C. Personal cold tolerance varies, so layering a hood, gloves or boots extends the range.

How does the chest zip compare to a back zip?

The F.U.Z.E. chest zip is slightly slower to put on, but it seals better against flushing water and leaves your back and shoulders free of rigid hardware — which pays off every time you paddle.

Will it feel stiff at first?

New 4/3mm suits always start firm. TechnoButter foam breaks in within a few sessions and then stays highly flexible — that's the point of the Hyperfreak series.