1. Material: plastic 2. Weight: number 1 is about 80 grams, number 2 is about 100 grams, number 3 is about 141 grams, number 4 is about 170 grams, number 5 is about 220 grams 3. Mouth length: number 1 is about 7 cm, number 2 is about 8 cm, number 3 is about 9 cm, number 4 is about 10 cm, and number 5 is about 11 cm. 4. Mouth circumference: number 1 is about 22 cm, number 2 is about 27 cm, number 3 is about 31 cm, number 4 is about 34 cm, and number 5 is about 38 cm 5. Application: dogs 6. Features: movable buckle, easy to adjust the size, fixed spout, safe and convenient, made of plastic material, strong and wear-resistant, environmentally friendly, non-toxic, fluorescent at night, lined with soft swimming cloth, comfortable, safe and not hurting pets
