Phase Change Cooling Vests

Phase change cooling vests use specially formulated inserts that melt at a fixed temperature — typically 15°C or 21°C — absorbing heat from your body at a slow, steady rate as they do. Unlike ice, a phase change vest never drops below its set point, so there's no cold shock against the skin and no risk of the vest becoming uncomfortably cold. The result is consistent, dry cooling that lasts two to four hours per charge.

Why choose phase change over ice or evaporative? Because it works everywhere. Evaporative cooling fails in humidity — a real problem in Queensland, the Northern Territory, and along the east coast in summer. Ice vests are colder but heavier, require a proper freezer to recharge, and can be uncomfortable against bare skin. Phase change vests recharge in cold water or a standard freezer, stay dry to the touch, and can be worn under work clothing or PPE without bulk.

Who are phase change vests for? They are the preferred option for people managing heat-sensitive conditions including Multiple Sclerosis, POTS, Lupus, dysautonomia, and Fibromyalgia, because the controlled temperature avoids the temperature spikes that can worsen symptoms. They are equally suited to outdoor and industrial workers on long shifts, athletes training in humid conditions, and anyone who needs reliable cooling throughout a full workday.

Recharging: Submerge inserts in cold water for 20–30 minutes, or place in a freezer for 45–60 minutes. Keep a spare set of packs in a cooler for back-to-back shifts with no downtime.

Temperature options: 15°C packs provide faster, more intense cooling and are ideal for pre-cooling before sport or for high-heat industrial environments. 21°C packs offer gentler, longer-duration cooling suited to all-day wear and medical use.