The O’Neill Psycho Tech 5mm+ RT Boot is part of O’Neill’s premium cold-water lineup, engineered by the Area 52 R&D team to perform in the harshest conditions and coldest climates. Built with TechnoButter 4 neoprene, the boot is lightweight and flexible, while the internal TB4 Firewall traps and redistributes heat to keep your feet warmer for longer.
The construction combines TB4X taped seams on the inside with exterior Fluid Seam Weld, reducing water entry and improving durability. The round-toe design offers extra warmth and natural comfort, while the Arch Strap stabilizes the foot and prevents slipping. The O’Ring Seal around the ankle adds protection against flushing, and the Heel Pull makes getting in and out easy. A durable outsole provides strong grip and resilience under heavy use.
Product highlights
MAXIMUM COLD PROTECTION
5mm+ neoprene with TB4 Firewall ensures warmth in icy waters
COMFORTABLE ROUND TOE
Round-toe design improves thermal comfort and natural foot position
SECURE FIT
Arch Strap keeps the foot stable and prevents movement inside the boot
RELIABLE SEALS
TB4X Taped Seams, Fluid Seam Weld, and O’Ring Seal minimize water entry
EASY ENTRY
Heel Pull makes putting the boots on and off quick and simple
DURABLE OUTSOLE
Strong sole guarantees grip and long-lasting wear
Features
- Neoprene thickness: 5mm+
- Construction: TechnoButter 4 neoprene with TB4 Firewall lining
- Seams: TB4X Taped Seams (interior), Fluid Seam Weld (exterior)
- Round-toe design
- Arch Strap across instep
- O’Ring Seal around ankle
- Heel Pull for easy entry
- Durable outsole
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