0---Note: Please measure the circumference of your dog's mouth before you buy and choose the right size. 1---Unique design prevents your beloved pets from biting, barking, eating street food or licking their wounds. 2---High quality silicone material, lightweight, soft and flexible, non-toxic, non-plastic and washable. protects the dog's comfort and health. 3---Durable and adjustable strap with quick release buckle. The technical buckle is strong and durable and the nylon strap can be adjusted freely. It is very comfortable to wear and will not make the dog feel uncomfortable. Measure the circumference of the dog's mouth and neck. Please choose the right size, please check carefully before purchase. 4---Suitable for Chihuahua, Yorkshire Terrier, Maltese Dog, Miniature Pinscher, Samoyed Dog. Cocker Spaniel, Bostons Terrier, Bulldog, Pomeranian, Mini Poodle, Jack Russell, Pug, Pekinese and other small and medium dogs. Features: Material: silicone Colour: Yellow, Red, Blue Size: S: Mouth: 10-13CM M: Mouth: 13.5-16CM L: Mouth: 16-18CM XL: Mouth: 18-20CM