Product Description This harness is designed to be gentle on your dog's body, reducing strain on the neck and trachea, and providing a comfortable fit. The outer layer is made of polyester, and the inner layer is mesh, making it suitable for year-round use. The mesh itself has considerable cushioning, which should provide a gentle fit even when pulled. Adjustment is easy with the hook-and-loop fastener and tape, allowing for a better fit to the body. Choosing the right size is very simple; just measure the circumference of your dog's chest. Easy to put on and take off. Simply put the front legs in and fasten the hook-and-loop fastener and buckle on the back. The combination of hook-and-loop fastener and buckle provides excellent support, ensuring high safety. Chest size: 56 to 64 (presumably cm/inches - unit not specified)