1. Material: silicone, nylon2. Applicable objects: all dogs3. Weight: No. 1: 94g No. 2: 122g No. 3: 163g No. 4: 203g No. 5: 250g No. 6: 317g4. Function: anti-bite, anti-eating5. Silicone material, soft, strong, wear-resistant and will not harm pets, comfortable to wear6. Adjustable buckle, adjust the size according to pet size, don t worry about getting hair.

http://olla.gr/mesh-breathable-silicone-anti-bite-and-anti-call-pet-muzzle-specification-number-1-red/