Product Description: Material: ABS plastic + polyester cotton Size ------ Head circumference --------- Mouth length ---------- Dogs S ---- 24cm / 9.44 "---- 8cm / 3.14" ---- VIP, small Bomei etc. M --- 26cm / 10.23 "---- 9cm / 3.54" ---- Corgi, medium dog breed, etc. L ---- 30cm / 11.81 "----- 11cm / 4.33" --- Golden retriever, medium and large breed Features: Note that there will be conflicting behaviors for the first time, and the owner is encouraged to: 1. Place mouthparts around your pet first 2. Help your dog to wear a mask, and encourage habitual wearing. 3. Wear it with a traction rope to make your dog habitually wear it. Scope of application: 1. Dogs with respiratory disease or sensitive respiratory tract. 2. The young and the old dog. 3. Wear when going out in poor weather. 4. Dogs with Allergies 5. It is recommended to wear it when going out for medical treatment. 6. It is recommended to wear when pollen goes out during the season. Package Include: 1 * dog mask Notes: 1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors. 2. Due to the screen difference, the color may be a little different from what you expect, please allow it.