Didog Leather Spiked Studded Medium & Large Dog Collars, Harnesses & Leashes 3Pcs Matching Set for Pitbull,Boxer Material:Made of soft leather,Solid and Durable. Collar XL:2 inches width,neck for 21-24 inch. Harness Neck for 17.5-23.5 inch, Chest for 26-34 inch Leash 28 inches total length; Chain 5mm diameter,20 inches length(include the hook). Hand strap:1.0 inch width,8.0 inches length.