ITERY Pet Carrier, Back Front Pack Dog Cat Travel Bag Pet Mesh Backpack Head out Design Padded Adjustable Shoulder Strap for 5lb-6lb pets Size: S: 13.7'' *5.5''*17.7'' (suitable for 5lb-6lb) Inside hook design connects to pet's collar through slightly direct pressing against collars loop to prevent pet get out The front hole is adjustable with drawstring according to your pets size Material: Sandwich Mesh Fabric and Oxford Fabric Adjustable buckle and pad on strap will be more convenient to carry and lighten the weight of shoulder