Occunomix Miracool Plus Evaporative Vest - High Viz Yellow. Features: Machine Washable 1-2 Minute Activation Reusable & Easy to Recharge Zipper Closure Stays cool for 5-10 hours Wicking Birdseye Panels for fit & breathability Pocket: Inside lower left Sizing: S/M-2X/3X Occunomix Miracool Plus Evaporative Vest - High Viz Yellow