Features:Material:Nylon with Soft paddedDurable nylon with soft padded liner,comfortable and breathable to wearHook & Loop design,adjustable,also you can put some patches,stickersHigh quality metal cobra buckle and D ring,strong enough,corrosion resistant and not easy to rustQuick control handle design,also can be fixed when not in useFor the buckle,you can open it by press it's both sides up,when you lock it, just push it gently.Suitable for outdoor sports, training, travel, camping and hunting, durable dog training collarFit for medium large and extra large dogs,e.g.Bull Terrier/Samoyed/Husky/Chow Chow/Bulldog/Pitbull/Labrador/German Shepherd/Rottweiler/Golden Retriever/Afghan Hound/German Doberman pinscher/Mastiff/Alaskan Malamute/Boxer/Rottweiler/Dalmatian/Saint Bernard/Old english sheep dog.etc.Package Include:1 x Dog Tactical CollarSize Neck Adjustable WidthM 38-47CM 4CML 45-55CM 4CMXL 53-63CM 4CM