The Alphaburly Pro is focused on a personalized fit and guaranteed comfort. Constructed with a more-natural rubber compound and a full-length zipper this boot is much more flexible and much easier to get on and off. Fleece lining is replaced with an embossed neoprene liner for good air circulation to keep legs and feet dry and comfortable while the adjustable neoprene gusset increases stability and accommodates varying calf sizes. LaCrosse innovated Alpha technology by combining high quality, scent-free rubber with naturally insulating neoprene resulting in an extremely durable, lightweight and comfortable boot. A 1,000 grams of Thinsulate Ultra Insulation line the inside of the boot to keep you warm on the coldest days. Full length side zipper allows the throat of the boot to really open up making it even easier to get these boots on and off. Thick cushioning EVA midsole offers extra comfort and shock absorption. Adjustable side gusset allows for a customizable fit. Developed in 1963, LaCrosse Ankle-Fit design features a narrowed ankle pocket that grips the top of the foot better and locks the heel in place preventing excess rubbing and chafing. Realtree Xtra camouflage. The non-loading Burly Pro outsole provides optimal traction in all hunting conditions. Fiberglass shank. 18" height. 5.5 lbs per pair. Rated for temperatures from 20° to -60° F.