Why choose the dog recovery suit instead of a collar? - Dog bodysuit allows your dog to move and eat freely when wearing it. - Prevent harassment during the physiological period. - Keep your room or furniture clean from floating fur. - Use a breathable stretchy & breathable fabric, lightweight and breathable to wear. - Allow male or female dogs to go to the toilet without taking off the dog recovery suit. How to choose the right size for your pet? 1. Please measure your dog (Neck Girth, Chest Girth, Back Length )and refer to the size chart to get the most accurate size. 2. Manual measurement, so please allow an error of 0.39”-1.18". 3. If your dog is between sizes, choose the larger size. 4. Many dog brands have different measurements for their sizes, so a SMALL from a different brand may not fit the same as our SMALL size. Size Chart: S: Chest Girth: 12.6"-15.75", Back Length: 11.41", Suggest Weight: 3-7 LB M: Chest Girth: 14.17"-18.11", Back Length: 13.00", Suggest Weight: 6-13 LB L: Chest Girth: 18.11"-22.83", Back Length: 16.14", Suggest Weight: 10-22 LB XL: Chest Girth: 22.83"-28.35", Back Length: 18.9", Suggest Weight: 22-38 LB XXL: Chest Girth: 27.56"-34.65", Back Length: 22.05", Suggest Weight: 38-58 LB