Cooling Vest Guide
A cooling vest chills your core — the fastest way to lower how hot you feel. This guide walks through the five vest technologies we carry and helps you pick the right one for your day.
The Five Cooling Vest Technologies
Every vest we carry cools in one of five ways. Each has a sweet spot — here's how they differ.

Evaporative Vests
Soak in water for a minute, wring, and wear. As the water evaporates through the fabric it pulls heat off your torso — no ice packs, no batteries.
- Lightest option, easy to re-activate
- Cools for 1–4 hours per soak
- Works best in dry climates
- Most affordable technology

Phase-Change (PCM) Vests
PCM packs freeze at around 58°F — cool, never freezing-cold — and hold that steady temperature against your body for hours.
- Consistent, comfortable temperature
- No condensation or wet feeling
- Recharges in ice water or a fridge
- Trusted for MS and heat sensitivity

Ice Pack Vests
Freezer-charged inserts deliver the coldest cooling available. When you need serious heat knocked down fast, ice is the answer.
- Coldest option available
- 2–4 hours of cooling per charge
- Great under heavy gear and PPE
- Swap packs to extend all day

Water-Circulating Vests
A small pump moves chilled water through channels in the vest, cooling your whole torso continuously — like air conditioning you wear.
- Continuous, even cooling
- Ideal for long shifts and rides
- 12V and battery-powered systems
- Preferred for medical-grade cooling

Fan Vests
Battery fans move air across your skin, and powered cooling with no water or ice at all.
- Instant relief at a button press
- Nothing to soak or freeze
- Rechargeable all-day batteries
- Great for humid conditions
Compare Vest Technologies
A quick side-by-side of the five technologies.
| Vest type | How it cools | How it feels | Duration | Best for |
|---|---|---|---|---|
| Evaporative | Water evaporates from the fabric | Cool and slightly damp | 1–4 hrs per soak | Dry heat, sport, yard work |
| Phase-change (PCM) | Packs hold a steady 58°F | Cool, dry, consistent | 2–3 hrs per charge | MS, medical, work shifts |
| Ice pack | Frozen inserts absorb body heat | Coldest available | 2–4 hrs per charge | Extreme heat, heavy PPE |
| Water-circulating | Pump moves chilled water through the vest | Even, continuous chill | As long as ice and power last | Long shifts, riders, medical |
| Fan / thermoelectric | Powered airflow or cold plates | Breezy or instantly cold | Battery runtime | Humidity, on-demand relief |