Lifeful&reg; Dog High Visibility Waterproof Safe Reflective Polyester Vest, Easy, Comfy and Adjustable, for Walks, Travels or Work, Fluorescent Orange, Size M and L Waterproof and durable polyester material, practical for dogs in daily walks, travels or work during any season. Fluorescent orange as main color, with wide and large safe reflective stripes on back, both guarantee dogs safety during day and night. Wide, elastic and safe reflective front neck strap, no choking. Elastic and adjustable belly strap fastens by quick-release buckle at underside, to make it easy to put on. Size L: Vest Back Length 17.72 Inch, Back Width 18.5 Inch. A convenient leash opening hole on back neck for Size L. No special requirements on dogs breed; comes with Lifeful unique hang-tag.