Hyperfreak Fire 6/5/4mm Split Toe Wetsuit Boots

The O’Neill Hyperfreak Fire 6/5/4mm Split Toe Wetsuit Booties —a premium choice for surfers, windsurfers, kitesurfers and paddlers who won’t let winter conditions cut the day short. Built from O’Neill’s cold-water R&D program, these high-performance neoprene booties are designed to keep you warm, supported and locked-in when the temperature drops and the swell stays good.

FULL DESCRIPTION 

The O’Neill Hyperfreak Fire 6/5/4mm Split Toe Wetsuit Booties —a premium choice for surfers, windsurfers, kitesurfers and paddlers who won’t let winter conditions cut the day short. Built from O’Neill’s cold-water R&D program, these high-performance neoprene booties are designed to keep you warm, supported and locked-in when the temperature drops and the swell stays good.

The 6/5/4mm split-toe design balances heat retention with board feel, giving you added control and stability through turns, tacks and quick foot adjustments. A full wrap under-and-around foxing boosts arch support and delivers reliable lateral lockdown, helping reduce foot fatigue during longer sessions. With full inner and outer toe coverage, you get enhanced durability in high-wear areas plus improved grip during manoeuvres.

Engineered for warmth and comfort, O’Neill uses TB4 Firewall (recycled material) through the interior sole and top of foot, alongside TB4x (recycled) in the upper/shin for a snug, heat-trapping fit. Krypto Armor (recycled) reinforces the exterior top foot for added protection, while the UltraFlex exterior sole and upper/shin keep these booties flexible without sacrificing strength. Finished with glued and blind-stitched seams and interior recycled TB3X tape, they’re built to reduce water ingress and stay dependable session after session.

If you’re searching for warm 6mm split-toe wetsuit boots, winter surf booties, or cold-water neoprene booties that combine insulation, support and grip, the O’Neill Hyperfreak Fire 6/5/4mm Booties are a standout option for harsh conditions and high-performance riding.

KEY FEATURES

• FULL WRAP UNDER & AROUND FOXING FOR
• ARCH SUPPORT AND LATERAL (SIDE-TO-SIDE) LOCKDOWN
• FULL INNER AND OUTER TOE COVERAGE FOR DURABILITY & INCREASES GRIP DURING MANEUVERS
• GLUED & BLIND-STITCHED
• INTERIOR RECYCLED TB3X TAPE
• TB4 FIREWALL (RECYCLED MATERIAL) - INTERIOR SOLE, INTERIOR TOP FOOT
• TB4x (RECYCLED MATERIAL) - INTERIOR UPPER/SHIN
• KRYPTO ARMOR (RECYCLED MATERIAL) - EXTERIOR TOP FOOT
• ULTRAFLEX - EXTERIOR SOLE, EXTERIOR UPPER/SHIN

CONSTRUCTION

Exterior: TechnoButter 4

Interior: TechnoButter Firewall

Interior: TB3X Taped Seams

Exterior: Fluid Seam Weld