Large 68cm – 95cmx25mmMedium 55cm – 68cmx20mmSmall 38cm – 50cmx15mmHelp your dog stand out during any adventure with our reflective, comfortable adventure harness. it features mesh padding for comfort and reflective accents for visibility. it features 3 buckles so it’s easy to put on and take off. simply, put it on like a collar then put the mesh panel in the middle of your dog’s chest. bring the waist strap around your dog and connect the buckles to the back strap. done and done! the collar and waist bands adjust for your dog’s optimal comfort