Boot Height: Approx. 18'' Tall. 400 Grams of Thinsulate Ultra Insualation. Internal EVA midsole provided long-lasting comfort. Side Zip for easy on-off. Outsole is built to optimize senssitivity, so you know what you're stepping on. Thin, lightweight rubber wrap aorund stalker outsole. Impregnated with cork reduce weight and improve durability.