Korkers Redside w/Felt Outsole Include Plain Felt and Interchangeable Sole Capability Add a Studded Felt, Studded Rubber, or any other Korkers accessory sole for added traction OmniTrax 3.0 Interchangeable Sole System adapts your traction to meet the performance needs of each river system Quick Cinch lace system for a quick and secure customized fit Waterproof materials reduce water absorption, thereby reducing overall weight, and dry faster helping to prevent the spread of invasive species