Shaft Height: Approx. 12'' Tall. The Mountaineer is a cold weather boot designed to provide superior traction, warmth, and toughness so you can enjoy winter to the fullest. Then, when spring comes, simply slip out the removable wool-felt liners and you've got the perfect mud boot for milder spring temperatures. Removable wool-felt liner adds insulation and underfoot cushioning. 200g of Thinsulate Insulation offers lightweight warmth for those needing protection in cold climates. Ozone-resistant rubber bottom with full-grain water-resistant leather.