The ZXT? Irrigation rubber boot is 100% waterproof and made of ZXT?, a premium, ozone-resistant rubber compound with high tensile strength for durability. A full cushion foam footbed adds comfort and the Trac-Lite? outsole grips in mud and other loose terrain. A top strap buckles for an adjustable, secure fit. Fiberglass shank. Ozone-resistant, abrasion-resistant rubber offers 100% waterproof protection. ZXT? rubber is a premium compound of rubber that has a high tensile strength, which means greater tear-resistance and greater durability. Full-cushion foam footbed for cushioning comfort and all-day support. Trac-Lite? outsole delivers outstanding all-around traction in mud, snow and other loose terrain. Top strap and buckle provide an adjustable, secure fit. Heavy-duty cotton duck lining. 26 height. Weight: 6.7 lbs per pair.