The AlphaCool Polar Cooling Vest is designed to keep you cool and comfortable in hot weather and warm working conditions. The unique design of this ice vest allows you to simply slip it on and instantly cool your core temperature to reduce the dangerous effects of heat stress. This ultra-thin cooling vest remains flexible at any temperature for ultimate comfort and temperature regulation because it stays close to your body at all times. Filled with our water-based AlphaCool gel, this cooling vest will stay cool for almost 2 hours and can be stored in either the refrigerator or freezer for instant use. This vest is great for staying cool while working in hot conditions, as well as while doing everyday tasks like gardening, walking the dog, and mowing the yard. Polar Ice Vest Features: Instant Cooling Comfort Lightweight 3lb Design Cooling lasts 1-2 hours Store in Refrigerator or Freezer for instant use Reusable over and over! Water-based non-hazardous ingredients Adjustable straps for fit Easy-to-clean Nylon Insulation Shell Fits Sizes XS-3XL AlphaCool Polar Ice Vest Instructions: Activate Cooling Vest in Refrigerator or Freezer for 1-2 Hours Slipover your shoulders and adjust straps to comfort Trim excess strap length if desired Enjoy the instant cooling!