1. quality material: The outer layer of our dog harness is made of polyester fabric for a softer and more comfortable feel. The interior features a dense, small perforated mesh cloth for enhanced breathability, with tightly woven threads that resist sticking to dog hair. 2. Size: XS (Bust 2629cm) for pets under 1.5 kg. S (Bust 3034cm) for pets weighing 1.53 kg. M (Bust 3540cm) for pets weighing 34.5 kg. L (Bust 4146cm) for pets weighing 4.57 kg. XL (Bust 4752cm) for pets weighing 7.510 kg. Please measure your pet's size accurately before ordering. 3. Reflective and safe: The reflective design ensures visibility in lowlight or dark conditions, enhancing safety during nighttime walks. The ergonomic design evenly distributes pressure across the chest and shoulders, reducing strain on your dog. 4. Easy control: Our dog harness includes an alloy traction hook on the back, making it suitable for daily walks, outdoor training, hunting, and more. Simply attach a leash to guide your pet while walking, running, shopping, or exercising—combining freedom and safety.