Caesar Collar, Harness, Lead & Leash Extender are great for your royal pet! All featured collars are made of ribbon material on heavy nylon webbing with sturdy metal and plastic adjustable hardware. Collar, Lead, Harness & Leash Extender/Coupler are sold separately.Teacup Collar: 1/2 in. x 6-10 in.Teacup Leash: 1/2 in. x 48 in.XS/S Collar: 5/8 in. x 10-16 in.XS/S Leash: 5/8 in. x 48 in.M/L Collar: 1 in. x 16-24 in.M/L Leash: 1 in. x 48 in.XS/S Harness: 5/8 in. x 8-14 in.