Cutequeen Trading Utility Extra Large 1-Inch Martingale Heavyduty Nylon Dog Collar The 1-inch Lumberjack collar adjusts for a neck size from 14-inch to 24-inch it is made by high grade nylon Holds up to 450 lbs on a direct pull and 550lbs 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.