Korkers BoxCar Shoe with Kling-On Outsoles Synthetic Integrated, large drainage ports, internal midsole drainage channels, and mesh uppers allow water to quickly exit the Boxcar Includes Plain Kling-On Sticky Rubber Soles OmniTrax 3.0 Interchangeable Sole System, compatible with other Korkers 3.0 accessory outsoles Hydrophobic Upper Materials: faster dry times to lessen the chance of spreading invasive species Traditional shoe laces weave through rugged web loops for a tight fit, 2lbs 7oz per pair Integrated, large drainage ports, internal midsole drainage channels and mesh uppers allow water to quickly exit the Boxcar