Winter Boots by Columbia. Exterior of waterproof suede with Omni-Shield which seems resistant & is resistant to staining. Warm lined inside of polyester with a removable-absorbing EVA insole. Lined with Omni-Heat, the material can withstand temperatures down to -30 ° C. Tech Lite molded midsole which provides cushioning & protection. Shaft height approx 21 cm, circumference about 35 cm. Non-marking, grippy Omni-Grip outer sole in ribbed rubber.