The Everflex Arch Boot just might be the most comfortable dive boot you&';ve ever slipped your foot into. Featuring an innovative arch design that closely matches the foot&';s natural anatomy, the boot&';s foot pocket is cut wide, creating a cramp-free fit, even for wide-shaped feet. While the boot offers 5mm of thermal protection throughout most of the boot, in the upper ankle area the neoprene is a bit thinner to prevent bulkiness where it overlaps the wetsuit leg. The Diamond Span inner lining is super comfortable and dries fast. Innovative arch design provides a level of support and comfort not often found in dive boots. Boot&';s 5mm neoprene, laminated on the outside with super-stretch nylon, is so pliable that donning and doffing is easy without the need of a zipper. No-zip design includes webbing puller loops in front and back to aid in donning. Diamond Span interior improves warmth and comfort and dries fast. Heel cap includes a molded fin strap keeper to eliminate strap slippage Black/Gray "boat-style" color and logo The outside of the toe box is cushioned and protected against abrasion. Made with X-Foam neoprene, a very specific limestone-based neoprene complying with strict PAH and REACH regulations.