Passive · power-free
PCM Cooling Vest
Frozen phase-change packs sit in sewn-in pockets and absorb body and ambient heat as they melt, cooling the wearer for several hours with no battery and no water. Two common formulations activate around 28°C and 21°C: the 28°C packs give a milder, longer effect for general outdoor work; the 21°C packs give a sharper cooling sensation for short, intense exposure. Packs are recharged by freezing or cold-water submersion and reused across shifts. Best for construction, warehousing, agriculture, and events where passive cooling matters.
Specify pack temperature, count, placement, shell & fit