describe Material: Polyester Soft and lightweight. Perfect for everyday walking, jogging, training and all outdoor leisure activities. Dogs can walk freely in it and will love it The chest pressure is even and safe, preventing pulling and suffocation, and protecting the dog's delicate trachea and neck pain-free. Reflective strips: With reflective strips, your dogs and cats can see in low light conditions. Improve the safety of walking at night. Size: S (chest circumference 36-48cm), recommended weight 7-15 catties M (chest circumference 41-52cm), the recommended weight is 15-22 catties L (bust circumference 54-66cm), the recommended weight is 22-32 catties XL (chest circumference 64-78cm), the recommended weight is 30-50 catties Reflective design for night travel, this pet chest strap is designed with reflective logos and reflective stripes to effectively avoid night light problems. If your pet gets lost, you can find your lost pet more easily, making your night travel safer. Safe and comfortable pet chest strap with breathable mesh. Decompression night reflections look exquisite. Soft and comfortable. Three-dimensional overall structure, easy to carry. The chest is connected by four webbing belts, which adapt to the dog-shaped design, balance the stress area of the pet, do not press the neck, and can be worn for a long time without hurting the pet. Breathable material, comfortable and safe draw distance, good grip. Can withstand strong tension, not easy to break, exquisite details, perfect quality. Polyester mesh material, comfortable and breathable, the pet chest strap is made of polyester mesh fabric, the fabric is soft to the touch, will not attract pet hair, and will not hurt your pet's skin. The fine and comfortable mesh is non-sticky and very breathable. This product is designed with Velcro, which can be fine-tuned and has strong adhesion. It adapts easily to the dog's size and doesn't fall off easily. It is safer and provides better protection for your pet.