Product name:Dog Collar and Leash Combo Set.Package Contents:Dog Collar*1 + Leash*1.Material:Polyester+Metal+Plastic.Colors for option:Multi-colored...Sizes for option:Extra Small: Collar 7.5"-11" Leash 5/8"* 5ft.Small: Collar 10"-15" Leash 5/8"* 5ft.Medium: Collar 13"-20" Leash 3/4"* 5ft.Large: Collar 15.75"-25" Leash: 1"* 5ft.Please measure your dog’s neck circumference before ordering and add 1/2" to make sure your dog feel comfortable.