The Gerbing 5V Circulatory Cooling Vest's built-in water circulation unit brings the highest quality cooling technology into a compact vest for better wearability and easy operation. It comes with 4 refillable ice packs, each providing 1-3 hours of cooling. The rechargeable battery provides up to 8 hours of cooling through tubing embedded in a mesh liner. The mini pump circulates cold water that continuously flows throughout the vest, keeping you cool and comfortable in hot conditions.

Features:

• Ergonomically cooling design, front zipper with adjustable sides
• Touch-button control with 3-speed settings
• One size fits most, chest measurements 33" - 44.5"
• 4 refillable ice packs
• 5V 10,000mAh battery
• 1-3 hours of cooling from using a reusable ice pack
• 8 hours maximum run time