Since 1963, the LaCrosse® Men's Burly has been an insulated do-it-all rubber boot that their customers knew they could always trust. Today, these boots are alive and well. They’re still made from LaCrosse® proven ZXT Rubber. They’re still built to perform under the harshest of conditions. And they’re still the boots you can call on to get the job done. Waterproof ZXT Rubber upper 800 grams Thinsulate™ insulation EVA midsole Fiberglass shank support Adjustable top strap for a secure fit around your calf Revolutionary fit ensures a secure and comfortable fit around your ankles, while gripping the top of your foot and locking your heel in place Air-Grip outsole features a unique, self-cleaning tread pattern that keeps you steady in the nastiest of terrain Product Features: Weight:5.5 lbs. Waterproof:Yes Insulation:800g Thinsulate™ Ultra Height:18" Lining:Nylon fabric Midsole:EVA (Ethyl Vinyl Acetate) Cushioned Foam Outsole:Air Grip self-cleaning Rubber Upper:ZXT Rubber Comfort Range:Rated -40°F to 40°F LaCrosse Men's 18" Burly Air Grip 800g Insulated Waterproof Boot