Grundens Men's CrossCurrent Boat Shoe Steel Grey Size:11.5 Part Number: 43 WWK16 Features Polyform s unique Part Number: 43 WWK16 HOW TO USE: To open (1) hold the RoboCup with the jaws facing away from you and (2) using both hands squeeze the cups inwards using your chest muscles and (3) clamp onto a surface using both jaws equally Soft Lining for Barefoot Wear with Easy On Off Stretch Mesh Tongue Cross Current is constructed with a lightweight and breathable mesh that provides reduced dry time and the feel of a performance sneaker while an ultra soft lining offers all day barefoot wear and the ease of slipping on off with a stretch mesh tongue