widely used in communication,sanitation,transportation,mining and gardening,100% polyester mesh waistcoat,high-light reflective SIZE:L,XL,XLL,XXXL, 100PCS/CTN 50*35*45CM,net/gross weight:16/17kgMainly applies to the personnel of police, Highways, traffic commander, highway maintenance personnel, motorcycle and bicycle motorists, dark light, workers, etc. need to light warning local workers.