It is made of silicone and is very soft and comfortable. Safe, non-toxic, washable. Durable and adjustable shoulder strap with quick release buckle. Prevent pets from biting, barking, eating leftovers, or licking wounds. We offer 3 sizes to choose from, and this size is M's. Suitable for puppies up to 19 pounds. This is a great gift for veterinary offices, dog parks, or pet goods retailers.