Dog and Cat Sling Carrier: The small dog sling carrier has a dual safety device, and the adjustable safety hook can be fixed on the dog's collar or harness to prevent the dog from accidentally falling off. Upgraded mesh opening design can cover the whole body and can be adjusted according to your pet's size, more secure than normal buttons, pets are not easy to break free and jump out. : Puppy Carrier is made of Double layer fabric. The outer layer is a solid color cotton