The Chill-Its 6215 Premium Phase Change Cooling Vest is made to house phase change cooling packs to keep workers cooler, safer and more productive. The phase change cooling material maintains a 64° F (18° C) temperature for up to 4 hours when activated. The vest is made of a modacrylic cotton blend FR fabric which meets ASTMF1506 requirements as well as classified to NFPA (CAT1). The adjustable hook and loop closures at the shoulders and waist provide a customized and comfortable fit. Keep your writing utensils handy with two pen slots on the right-side of the vest. Available in tan or hi-vis orange with reflective taping. Sizing: The cooling vest comes in two sizes ranging from S/M (32in - 40in / 81cm - 102cm) to L/XL (40in - 52in / 102cm - 132cm). To find your size, wrap a tape measure around the widest part of your chest, under your arms, and completely around your torso. See size chart for more information. How to Use: There are many ways to activate your cooling vest. Simply place the two removable packs in a cooler of ice water for 10 minutes; freezer for 15 minutes; refrigerator for 25 minutes; or near an air conditioner for 1 to 2 hours. Then place the recharged cooling packs in the vest pockets for hours of cooling. How to Clean: The cooling pack should be washed by hand with a mild detergent and warm water. Dry with a paper towel or cloth. DO NOT machine wash or machine dry. The fabric vest carrier is machine washable with mild soap; hang dry. This body cooling vest is perfect for anyone in need of instant cooling relief while working or playing outside or indoors in warm temperatures where heat-related illnesses like heat cramps, heat strokes, heat exhaustion, etc. are possible. Ideal for workers in pulp/paper, iron/steel, vulcanizing, foundries, etc. or for people running, biking, doing yard work, riding motorcycle and more! Also, ideal for those needing cooling relief but aren’t able to use an evaporative cooling option. Features: Flame Resistant - Vest made with modacrylic cotton blend FR fabric Flexible Fit - Adjustable hook and loop closures on both shoulders and waist More Cooling Power - Extended vest surface area enhances cooling power Reflective Accents - Designed for more visibility on busy streets or job sites Convenient Storage - Two elastic pen loops on chest Available in 2 Sizes: S/M and L/XL Tested & Approved - Fabric meets ASTM F1506 performance requirements (ATPV rating of 7.1 cal/cm2); Classified to NFPA 70E (CAT1) Cooling packs sold separately and feature: Immediate & Long-Lasting Cooling Relief - Packs maintain constant 64°F (18°C) for up to 4 hours Quick Recharge - Packs recharge in a little as 10 minutes Honeycomb Design - Patented honeycomb ice pack design eliminates stiffness Weight with Packs: S/M - 6lbs / 2.7kg, L/XL - 9lbs / 4kg Specifications: Closure: Hook and Loop Construction: Adjustable, Padded Cooling Hours: Up to 4 Hours Cooling Type: Phase Change Materials: Cotton, Nylon, Polyester Pockets/Holders: Pen Pocket Product Features: Form Fitting, Machine Washable, Reflective Accents Product Type: Replacement Part, Vest Protection: Flame Resistant, Self Extinguishing, Warm Temperature Protection, Reflective Risk/Injury: Arc Flash, Heat Stress Standards/Compliance: ASTM F1506, ATPV Rating, CAT 1 Ergodyne Chill-Its 6225 Premium FR Phase Change Cooling Vest (Vest Only)