LaCrosse Burly Classic 18" Size:13 The moisture wicking polyester Double Down The moisture wicking polyester Double Down fabric on the lower torso is 15 times more breathable than the upper waterproof Guardian Flex material and works to prevent the build up of perspiration and moisture vapor Features: Steel shank for added arch support Vulcanized Rubber Construction Rubber outsole 16 Inches of Snake Proof Protection Rocky Briar & Thorn Guard High Abrasion Snake Guard The Lightest & Most Flexible Snake Guard on the Market= Superior Waterproof Construction with 2mm Neoprene Upper & Molded Rubber Over Key Wear Points= Removable PU Footbed with Memory Foam