100% waterproof over-the-sock boot remains durable year after year. Comfort rated from 0 to 70°F. Made from proven ZXT rubber with removable EVA footbed. ZXT rubber is ozone-, abrasion- and tear-resistant with added tensile strength. Multilayer rubber on toe and heel plus a double-layer, ribbed vamp for durability and support. 9 mm wool felt midsole and polymeric foam insulation for warmth. Features fiberglass shank and chevron cleated, slip-resistant traction. Adjustable top strap customizable for a secure fit around calf. Ankle fit ensures secure and comfortable fit around ankles, while gripping top of foot and locking heel in place. 18" height. Green. Men's sizes.