Korkers Greenback Wading Boot with Kling-On & Studded Kling-On Soles Leather Kling-On and Studded Kling-On Sticky Rubber Soles Included OmniTrax 3.0 Interchangeable Sole System, compatible with other Korkers 3.0 accessory outsoles Water flows thru internal channels then out midsole ports, removing excess water and weight. Hydrophobic materials = faster dry times which lessen the chance of spreading invasive species. 2 lbs 7 oz (per pair, size 9)