This is a day and night high visibility vest with a functional design meeting the needs of hunting dogs when visibility is paramount. elastic in the belly with a durable silicone buckle; The vest can be used on both sides depending on the color you want to make more visible (HV Orange or HV Yellow) with details and a 3M High Visible print; Made of 2 layers of 500 durable Cordura.Colour: HV Orange / Reflex, HV Yellow / Reflex - Double sidedSizes: M = medium dogs, L = large dogs