Developed for use during a variety of water sports, the FiveFingers Surge offers a 1.2mm neoprene lining- the world standard in thermal insulation for in-water activities. Three adjustable strap closures provide secure comfortable fit needed in fast moving water. A non-marking Vibram TC1 performance rubber sole is razor-siped for flexibility and slip resistance over a variety of surfaces. Best for sailing, kayaking, surfing, windsurfing, flats fishing and canoeing.