Reminder: Please accurately measure your pet's chest circumference before placing an order. You can measure and choose the right size according to our tips. Please reserve a room of 2-3cm to ensure comfort. Safety: The nylon webbing with reflective material can better improve the visibility and ensure the safety of the dog in low light conditions and dark night outdoors. Stability: The strap is equipped with a sturdy alloy front clip and a durable D-ring. The top is for your friends to use. You can use the front hook to prevent your dog from pulling, specifically for training your dog. The back ring is used for leisure time, such as walking, hiking, and jogging with the dog. Easy to wear: Adjustable waist belt and large Velcro can adjust the tightness of the strap, and finally close the quick release buckle. You can put on or take off your seat belt in a few seconds. Soft and comfortable: The front of the strap is made of cationic dyed polyester, which is durable, bright, good in water absorption and smooth to the touch. The back is filled with soft mesh to ensure the comfort and breathability of the dog. L-Suitable for dogs with a chest circumference of 24-30" and a neck circumference of 18-23". XL-Suitable for dogs with a chest circumference of 28-34" and a neck circumference of 22-28".