FEATURES: 1. Flexible, sleek design for tucking into tight kayaks or packing into stuffed gear bags. 2. Constructed with 1.5 mm thick neoprene upper for extra warmth and a 1.8 mm rubber outsole for protection and optimal grip. 3. The 2mm neoprene footbed combines with a 2 mm PE shim for added comfort, structure and support. 4. Roomy toe box lets you wiggle your toes which helps maintain balance and control. 5. A wide opening combines with a stretchy neoprene cuff and ankle pull tab to make slipping the Arroyo on and off easy.