The 100% polyester mesh material is durable but lightweight and comfortable for all-day use, while the zipper front closure allows for easy on and off.Employing cleaning methods other than those outlined above may shrink the vest, ruin the reflective tape or dim the coloring below safe standards. Polyester Safety Vest Class 2 w/ Zipper Front & 2 Pockets (Lime/2X-Large) Do NOT machine dry.