Here is another cool wearable for hot summer days. Thanko’s Backpack Back Cooler has 2 cooling plates and 4 air circulation fans. It can lower the temperature up to 15C than your environment. It runs up to 3 hours on battery in high mode and 4 hours in low mode.
The Thanko Cool Backpack uses a 5V 2A USB battery. It weighs only 760g, so you won’t struggle to carry it.
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