Specifications: The elastic design of the elastic handle is full of elasticity which is easy to walk the dog and avoid sudden force damage. Comfortable cushions to prevent the dog from straining the skin in the event of sudden force. High-elasticity and reflective design you can see the dog s movements clearly at night and reduce traffic accidents which is more safety. It has good breathability comfortable to wear and it is suitable for all seasons. Item Name: Pet Chest Strap Material: Nylon Cloth Features: Adjustable Reflective Wear-resistant Size Details: [Our Size S] Bust: 48cm-60cm/18.9 -23.62 Neck: 44cm-52cm/17.32 -20.47 Pet Type: Chow Chow Bulldog etc. (Approx.) [Our Size M] Bust: 56cm-68cm/22.05 -26.77 Neck: 46cm-56cm/18.11 -22.05 Pet Type: Satsuma Husky etc. (Approx.) [Our Size L] Bust: 65cm-82cm/25.6 -32.28 Neck: 60cm-78cm/23.62 -30.71 Pet Type: Labrador Labrador etc (Approx.) [Our Size XL] Bust: 80cm-100cm/31.5 -39.37 Neck: 72cm-90cm/28.35 -35.43 Pet Type: Alaska etc. (Approx.) Notes: Due to the light and screen setting difference the item s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Pet Chest Strap