These waterproof wellington boots keep your feet warm and dry when the weather takes a turn, featuring a drawcord fastening to the top and a thinsulate lining, finished with a durable rubber outsole. Synthetic upper Adjustable drawcord closure Thermal lining Rubber outsole View the How to Measure and Fit at Home Guide Upper - Other Materials, Textile, Lining & Sock - Textile, Sole - Other Materials. Country of Origin: China 3M Thinsulate Insulation - Lightweight, warm, moisture resistant and breathable. Hypoallergenic and designed to maintain warmth.