Features:Material:Nylon with Soft paddedDurable nylon with soft padded liner,comfortable and breathable to wearHook and 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 or Samoyed or Husky or Chow Chow or Bulldog or Pitbull or Labrador or German Shepherd or Rottweiler or Golden Retriever or Afghan Hound or German Doberman pinscher or Mastiff or Alaskan Malamute or Boxer or Rottweiler or Dalmatian or Saint Bernard or Old english sheep dog.etc.Package Include:1 x Dog Tactical CollarSize Neck Adjustable WidthM 38-47CM 4CML 45-55CM 4CMXL 53-63CM 4CM Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store