AMOI yellow and black boots made with waterproof material. - Brand: AMOI - Color: Yellow/Black - Sole Design: Tread Pattern - Features: Waterproof material - Type: Boots These boots have boa lining inside and are waterproof. I was planning to use them for a trip to Hokkaido, but I outgrew them before I could. ( ; ; ) I think they will be warm. I have never worn them outside, but they have been stored at home, so please understand. Thank you for looking.