Wide, short blade design for quicker acceleration; Control is improved with bevelled sidewalls; Control is enhanced and drag minimized with delta tail design; Sand or pebbles are easily removed with maximum foot pocket drainage; Footing is enhanced on slippery surfaces with rivet grip tread; All Viper surfing fins float high to be easily spotted in the roughest surf conditions; Material: 100% Neoprene; :: Unisex > Surfboards Size: Small,Medium,Large.