Rogz Utility Classic is made from strong webbing. Choose from many Rogzilicious colours, all with reflective stitching.Features: Reflective Stitching: Reflective yarn is woven into the webbing for night time visibility. Contoured Plastic Component: ROGZ rounded contoured plastic components ensure that every ROGZ collar fits snugly. RogLoc: RogLoc is the Fort Knox of release buckles. Die-cast ring: Custom designed die cast ring (no welding). Electroplated chrome for a tarnish free finish. Low Load Technology: LLT technology reduces the load on the Titanium Plastic buckle through a cleverly positioned load ring. SIZES: See attached size guide Small: Width of webbing - 11mm; Neck size - 20-31cm (Yorkie, Pom, Maltese, Miniature Poodle, Chihuahua) Medium: Width of webbing - 16mm; Neck size - 26-40cm (Pug, Scotty, Jack Russel, Maltese Poodle, Terrier) Large: Width of webbing - 20mm; Neck size - 34-56cm (Dalmatian, Spaniel, Doberman, Boxer) XLarge: Width of webbing - 25mm; Neck size - 43-70cm (Rottweiler, Bouvier, Ridgeback, Labrador) XXLarge: Width of webbing - 40mm; Neck size - 50-80cm (German Shephard, Bulldog, Bouvier, St. Bernard)