Cutequeen Trading Utility Extra Large 1-Inch Martingale Heavyduty Nylon Dog Collar and Leashes The 1-inch Lumberjack collar adjusts for a neck size from 14-inch to 24-inch ,the Leashes length : 59-inch(150cm) It is made by high grade nylon Holds up to 450 lbs on a direct pull and 550 lbs through the Low Load Technology Ergonomic Contoured Components to sure a snug fit Box stitched joins for added a quality finish and strength;It's suitable for Ridgeback,Rottweiler, Labrador, Bouvier and similar sized breeds etc. It is added the security LLT(Low Load Technology) to reduce the load on the buckle.