The O'Neill Psycho Tech 3mm+ Split-Toe Booties bring flagship wetsuit technology to your feet — built on TechnoButter neoprene for the warmth and stretch cold-water surfers need without sacrificing the board feel that makes booties frustrating to surf in.

Key Features:

• TechnoButter 3 Neoprene — O'Neill's ultra-stretch, super-soft limestone neoprene used in the HyperFreak wetsuit line; dramatically more flexible than standard neoprene, which means your foot moves naturally through turns and pop-ups
• 3mm+ Thickness — 3mm core insulation with the PLUS (+) 0.5mm bonus warmth layer; rated for water temperatures from 50–62°F, ideal paired with a 4/3 or 5/4 fullsuit
• Split-Toe Design — separates the big toe for improved grip on traction pads and more natural foot articulation — especially noticeable on toe-side turns where precise foot pressure matters
• Glued and Blindstitched Seams — fully sealed seam construction prevents cold-water entry at stitch lines; critical for booties where water channeling at the seams is the primary source of cold feet
• Anti-Flush Ankle Collar — contoured cuff fits snugly against the lower leg to block the cold-water flush on duck dives and wipeouts
• Textured Rubber Sole — grippy, tactile sole provides solid traction on wet surf decks without adding so much thickness that you lose board contact feel

The Psycho Tech line is O'Neill's cold-water performance category — the same engineering principles as the HyperFreak wetsuit applied to accessories. In booties, the difference is tangible: TechnoButter neoprene lets you feel the rail engage and the tail slide in a way standard neoprene booties don't. The 3mm+ thickness makes these a serious tool for consistent cold-water surfing from late fall through early spring.

Sizing & Fit: Order your standard US shoe size. Booties should fit snug with no air pockets but without pinching toes. If between sizes, size up. Wear over bare feet for maximum warmth transfer.

Care: Rinse thoroughly with fresh water after every session — inside and out. Hang to dry with sole facing up. Do not tumble dry or leave in direct sunlight. Inspect seams seasonally.