🧿Rubber sole🧿Boot opening measures approximately 13" around🧿Waterproof material: Men's snow boots feature waterproof construction and windproof synthetic toe caps for anti-collision.🧿200g high-quality insulation material: Keeps your feet warm and dry even when the temperature is -25F.🧿Removable Insole: The insole can be removed and washed to keep your feet warm, dry, and comfortable. The fluffy and comfortable pile of fabric quickly absorbs sweat and moisture. Its soft cushions are used to soften the impact of walking and reduce fatigue.🧿Isulated: An insulated warm comfy lining provides better protection in bad weather. Perfect for daily life in the winter and outdoor sports like skiing, mountaineering, cycling, etc.🧿Durable & Slip Resistant: The rubber outsole is stable, slip & abrasion resistant, and flexible to various outdoor terrains.