Horseware's Goat Coat is made of waterproof, windproof, and breathable 600 Denier fabric, with a coat polishing polyester lining with 100 grams of fiberfill. It's fastened on the inside to keep our fellow ‘friends’ from unfastening. Reflective strips for ease of identification after dark, and it's adjustable by approximately four inches to accommodate different necks and thickness of girth.