Pyramex Safety – Hi-vis lime vest size 2XL adjusts to 5XL – Evaporative PVA panels keep you cool for up to 8 hours. 2″ silver reflective material. Quilted outer shell is made from soft polyester. Zipper front closure. Adjustable waist band. Reusable and washable. Submerge in cool water 1-2 minutes before wearing to activate.