LW (Living Water Reflective Running Vest with Bonus Sticker, Gear for Biking Walking Cycling Jogging LW reflective running vest; 100% breathable polyester mesh; Special design (above waist, tight fit) for ultra light-weight (1.5 oz) and full range of motions. Be seen, be safe! This reflective safety vest provides you the best protection from motorists after sunset by reflecting the light from the vehicle headlight back to the driver so you can be seen. Size S/M: Length 15.5", Width 18.0" (33-42" circumstance). Size L/XL: Length 17", width 20.5" (37-45" circumstance). BE SEEN, BE SAFE, when exercising in early mornings and evenings when it is dark. A bonus LW reflective sticker (2" x 2") will be included. Can be attached on clothes, backpacks, bikes, helmets and more.