Classic Sorel boot with two Velcro straps with extra reinforcement on the tongue. Waterproof suede in the upper part. Sizes 25 to 31 have a 9mm removable and washable inner lining. The smaller sizes, 21 to 24, have a 6 mm removable inner lining. There is a snow lock. There is a 2.5 mm forest plug in the midsole. The larger sizes can handle up to -40 degrees, and the smaller sizes can handle up to -32 degrees. Do not forget to remove the inner lining after use to air and dry them.