Perfect for winter season, keep you warm and comfortable in outside activities, can be match with your different clothes. 20 cm/7.87 inch. These boot socks have high elasticity and perfectly make it suitable for most feet One size fits more. 2. Easy to match most clothes. 3. Recommended for hand washing. 4. Thicken, warm, soft, breathable and skin-friendly, comfortable to wear. 5. Wonderful present for your family, girlfrends and friends.