O'Neill Psycho Tech TB4 5mm RT Booties

The redesigned Psycho Tech is our most advanced boot, with an O'Ring entry and liquid-sealed Sidewinder seams for superior watertight performance. Our heat-retaining TB4 materials and rugged Krypto Armor enhance comfort, warmth, and durability while preventing overexpansion. A wrap-under arch segment pairs up with our high-performance All-Terrain Mudder Grip for improved stability. Built for the harshest conditions.

• Anatomical Fit
• Round-Toe for Increased Warmth
• Wrap Under Arch Foxing Segment for Improved Structure and Torsion Control
• Extended Foxing Coverage for Enhanced Durability and Grip
• Heel Lock Instep Strap
• Tapered Entry with O'Ring Seal
• Easy Entry Heel Pull Tab
• AT-Mudder Grip Sole for Slip-Free Performance

• Fluid Seam Weld with Fully TBX Taped Seams
• Shin: TechnoButter 4
• Instep, Heel: TB4 Krypto Armor Firewall
• Sole: TB4 Firewall
• Multi-Layered Foxing
• PLUS (+) = 0.5mm Extra thickness for even more warmth