Materials Harness: Soft stretch poly base, woven nylon webbing straps, coated carbon steel D-rings. Leash: Flex-poly coated nylon webbing strap, zinc alloy snap hooks, coated carbon steel D-rings. Poop Bag Carrier: Soft-touch plastic, elastic band with an iron clasp. Product Dimensions & Specs Harness Without Neck Buckle: XS: Neck = 8"-11", Chest = 12"-15" S: Neck = 10"-14", Chest = 14"-22" M: Neck = 12"-18", Chest = 18"-28" L: Neck = 16"-21", Chest = 24"-38" Standard Leash: Regular attachment measures 5.5 feet Short leash adjustment measures 3.25 feet Strap width - 3/4" Weight - 0.5 lbs Poop Bag Carrier: Diameter: 1.75" Height: 3.5"