Boot Height: Approx. 18'' Tall. LaCrosse innovated Alpha technology by combining high quality, scent-free rubber with naturally insulating neoprene resulting in an extremely durable, lightweight and comfortable boot. 800 grams of Thinsulate Ultra Insulation line the inside of the boot to keep you warm on the coldest days. Adjustable rear gusset allows for a customizable fit. Thick cushioning EVA midsole offers extra comfort and shock absorption.