Material: polyester product specifications; M neck less than 25cm diameter 25cm L loop of the neck is less than 35cm in diameter 28cm Features: 1. Effective interval anti-licking and anti-biting, release and grasp, anti-licking 2. Soft and comfortable to better protect wound healing 3. Prevent secondary infection 4. Waterproof material, shrinkable design 5. Give your pet more careful care