Koojack: Semiconductor Fast Cooling Vest for Chill Comfort

Semiconductor Cooling Technology | Fast Cool Down in 3s | Intelligent Temperature Control | Comfortable and Lightweight | Durable Usage

The Koojack Semiconductor Fast Cooling Vest offers quick relief from summer heat with advanced semiconductor technology, cooling you down in just 3 seconds. It features intelligent temperature control, maintaining a comfortable 25°C. Unlike traditional cooling vests requiring pre-frozen ice or water bags, Koojack’s built-in chips provide continuous cooling without the hassle. Simply plug in the power bank and press the switch for instant coolness, with a real-time temperature display for convenience. Durable, wear-resistant, and easy to wash, Koojack is perfect for outdoor activities like farming, gardening, hiking, fishing, and cycling. The included 5000mAh power bank ensures two hours of uninterrupted cooling comfort.