TFE Search Dog Reflective Vests This is a quality designed dog vest with the dog's comfort in mind. Made of 1000 D Cordura Nylon and is fully adjustable. The reflective patch is made from 3M Scotchlite material and has a visibility of up to  mile. The swivel snap hook is perfect for a light stick or flasher. M/S size is for dogs from 30-50 lbs.