Material: soft translucent plastic film， a protective outer ring has black linter cloth， will not harm the body of the pet
Specifications：
No. 2 for collar 38-42cm， depth 20cm，
No. 3 for collar 35-38cm， depth 15cm，
No. 4 for collar 29-33cm， depth 13.5cm，
No. 5 for collar 258-30cm， depth 12cm，