Extracted from the manufacturer's description: The inside is lined with boa for warmth and excellent insulation! The insole is removable and washable. The sole is a one-piece design that covers the instep, preventing water from entering. The outsole has good grip, reducing slipping on snowy roads. The opening has a drawstring to prevent snow from entering. Waterproof to 4cm from the outsole. *Not completely waterproof, including the upper. Priority will be given to the first purchaser, so you are welcome to purchase immediately even if negotiations are in progress. Since this item is also listed on other sites, it may be removed from sale if it sells out elsewhere. Please feel free to ask if you have any questions.