Our best shoe for a water and sun based lifestyle. Ultra-fine ripstop mesh breathes deeply while keeping debris out. Our level footbed, wider toe-box and sticky GA(R) Rubber outsoles promote ninja-like performance in slippery places. Technical Details Intended Use: SUP, Training, Sailing, Fishing. Not recommended for heavy whitewater use.Uppers: Ultra-fine ripstop mesh, with TPU reinforcements to guard against abrasion. Sock-like entry with laces for security.Midsole: Drop-in, 7mm thick 45 C closed cell EVA Foam with massage pods.Outsole: Flex-Grip(TM) is non-marking, draining, super flexible, razor siped, and has 3 mm lugs. Made with G.15(TM); our sticky, high abrasion compound.Foot to Ground Distance: 12mm heel, 11mm ballFit: True to size (For half size, size up)Sizes: M&';s US Sizing 8-14 (Whole Sizes Only)Weight/Shoe (size 9US): 190g (6.7oz.)