Features: 1. The outer fabric of this chest strap is Oxford cloth, which is firm and wear-resistant; 2. The inner fabric is sponge-filled + mesh cloth material, which is breathable, comfortable and non-sticky; 3. It uses exquisite high-reflective edging and reflective webbing to make it safer to go out at night. 4. The product is designed according to the dog's body structure. The dog is comfortable and not easy to break free when using. The front chest and back can be towed, which is convenient for the owner to run or walk, choose the most convenient way to tow 5. Comes with a locator protective cover to place the locator. Material: Polyester Size: S, Chest: 36-50cm, Neck: 36-46cm Size: M, Chest: 46-63cm, Neck: 44-54cm Size: L, Chest: 54-71cm, Neck: 47-64cm Size: XL, Chest: 68-93cm, Neck: 60-79cm Tips: 1.Be sure to measure the dog's bust before purchasing the product. Due to there are so many dog breeds,so the measured chest size is more accurate than the reference weight. Note: 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. Sold by-Dadangjia