1. Material: pure silicone2. Target users: small and medium-sized dogs3. Function: anti-bite and anti-call4. Multi-dimensional convection design, comfortable and breathable, environmentally friendly and safe, easy to wear, silicone material, soft and comfortable, PPO buckle to prevent break away5. S code is suitable for dogs with a mouth circumference of 10-13 cm, M code is suitable for dogs with a mouth circumference of 13.5-16 cm, L code is suitable for dogs with a mouth circumference of 16-18 cm, and XL code is for dogs with a mouth circumference of 18-20 cm

http://olla.gr/pet-dog-muzzle-anti-bite-anti-call-silicone-muzzle-size-xl-red/