Sorel Boots - Sorel 1964 Premium Boots - Black :: Men > Boots. Shaft Height: 8 1/2\\ 2.5mm bonded felt frost plug Removable. washable 9mm recycled felt inner boot Lace up closure with metal eyelets for a customised fit Hardwearing rubber sole with stripe detail Men's Sorel snow boots Weight: 30 oz / 850 g Sorel Rated: -40C Vulcanised rubber shell around bottom for even more waterproofing Material: Synthetic upper. rubber sole Waterproof leather upper with seam-sealed waterproof construction to completely prevent water entry Rubber midsole provide shock absorption and padding for all-day use