Columbia Men's Boatdrainer PFG Boat Shoe 100% Leather/Textile Imported Rubber sole Heel measures approximately 1.25" Platform measures approximately 1" Heel and forefoot drainage ports Non-marking outsole Techlight midsole OmniGrip wet rubber traction OmniShield water repellency By land or by sea, but especially by sea, this boating slip-on delivers peak performance.