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O'Neill 4/3+ Hyperfreak Fire Chest Zip Wetsuit

sku# 229608
O'Neill - 4/3+ Hyperfreak Fire Chest Zip WetsuitO'Neill - 4/3+ Hyperfreak Fire Chest Zip Wetsuit
Model Info


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Product Info

With an extra 0.5mm of thickness for added warmth, the O'Neill 4/3+ Hyperfreak Fire Chest Zip Wetsuit was born to make the anxieties around that initial plunge in colder waters a non-factor. As part of the Hyperfreak Fire series, this high performance chest-zip wetsuit builds upon the past successes of O'Neill's TechnoButter 3 by utilizing their new and improved TechnoButter 4 material throughout and their ultra-stretchy new TB4X across the chest entry system and sleeves. Finished with triple glued and blindstitched seams, plus exterior Fluid Seam Weld technology, the O'Neill 4/3+ Hyperfreak Fire Chest Zip Wetsuit offers the ultimate blend of flush-free warmth, performance, and longevity.

Product Details


Recycled Oyster Shells and Eco Carbon Black Infused Neoprene

Recycled Dope-Dyed Yarn Jersey

TechnoButter 4X (Entry & Sleeves)TechnoButter 4X goes beyond the gooey stretch, and soft feel of TB3X. Recycled graphene fibers line the jersey allowing for incredible stretch with added strength and warmth retention, all with a new look.

TechnoButter 4 (Shoulders, Shins, & Calves)TB4 builds on the legendary TechnoButter 3, the next evolution of the jersey introduces recycled yarns infused with graphene for increased wear strength and heat retention.

TechnoButter 4 Firewall (Front, Back, Thighs & Butt)The all new TechnoButter 4 Firewall utilizes the recycled graphene fibers at a thicker pile to create a fire hot feedback loop. As the body heat warms the graphene fibers they conduct the heat back into the body.


F.U.Z.E. Chest Zip ClosureO’Neill’s exclusive F.U.Z.E. (Front Upper Zip Entry) system offers a fresh alternative. Using the same free floating zipper technology as the patented Z.E.N. ZIP closure. The F.U.Z.E. closure keeps you dry and allows unrestricted flexibility.

Tapered Cuffs with Segmented 3D Wrist and Ankle Seals


O'Neill Hyperfreak Fire SeriesThe O'Neill Hyperfreak Fire range focuses on extreme warmth, high performance, increased durability, and comfort. All-new sustainable, buttery soft, heat recirculating TechnoButter 4 materials line each suit. These technologically advanced materials plus water-tight Fluid Seam construction have created a new cold water legend. Fire red-hot heat takes the innovative Hyperfreak legacy to the next level.

Redzone Water Resistant Zipper

360° Barrier with Drain Holes

PLUS (+) = 0.5mm Extra Thickness For Even More Warmth

Triple Glued and Blindstitched with Exterior Fluid Seam Weld Technology

Aqua Alpha Solvent Free Neoprene Lamination

External Key Pocket with Loop


  • Wetsuit Thickness: 4/3.5 mm
  • Wetsuit Fit: Chest Zip
  • Material: Neoprene
  • Seam Sealing: Glued and Blindstitched Seams, Welded Seams
  • Manufacturer Item Number: 5512-A00
  • Warranty: 1 Year

Other Notes

O'Neill products can only be shipped within the United States and Canada



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