Non ASNI Phase 1 Cooling Vest With PCP1 Cooling Packs. One size fits most. When heat stress poses a serious threat, or when an employee has suffered a heat stress condition, PCCS delivers a serious solution. Vest fabric Proban FR7A Blue, creates a microclimate that keeps cooling against body in and keeps extreme environmental heat out. Vest includes PCP1 Pair of PCCS Cooling Packs, one for front and one for back of vest. Maintains 65° Fahrenheit/18° Celsius Cooling that lasts 2-3 hours. Duration may vary with conditions. Shirt Style. Approx. 3.5lb, includes more than 20" Reflexite®. One size fits most with hook and loop adjustments at shoulders and hook and loop horizontal closures. Often preferred by women. PCCS Cooling Packs maintain 65° Fahrenheit/18° Celsius and can be worn directly against body without the discomfort of cold or risk of frostbite. Unlike water and air cooled vests, there are no tethers for potential breakdowns during critical operations. Cooling Packs slip easily into PC1 Vests. Rechargeable thousands of times. Safe, non-toxic, non-carcinogenic, not harmful if accidentally ingested. Casings are ergonomically modular for comfort, flexibility and portability, with virgin urethane seals able to withstand up to 8,500 PSI to prevent leakage.