|Occunomix Pccs Phase 2A FR Vest w/Pair Cooling Packs PC2A. Portable Heat You Can Count On In Searing Heat .61% More Cooling Coverage than PC1. Vest fabric Proban FR7A Blue, creates a microclimate that keeps cooling against body in and keeps extreme environmental heat out. Includes PCP2 Pair of PCCS Cooling Packs, one for front and one for back of vest. 65¦ Fahrenheit/18¦ Celsius. Cooling lasts 2-3 hours. Duration may vary with conditions. Shirt Style, Approx. 6.5lb, includes more than 30ö Reflexite. One size fits most with hook and loop adjustments at shoulders and hook and loop horizontal closures.Replacement cooling packs and outer vest also sold separately.