I don’t know about you but I don’t enjoy working on hot summer days. The good news is there are now plenty of work vests and other wearables that have built-in fans to keep you cool. Take the ColdSpark Tactical Cooling Vest for instance: it uses dual fans to keep you comfortable. You get 3 levels of cooling and heating. You get 18C cooling in 60 seconds.
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This vest runs for 6 hours on battery. It uses a dual-mode semiconductor module to get the job done. It has multiple pockets, so you can carry your essential items with you. This vest is powered by a 12V mobile power bank. Its fans have 50CFM airflow. You can find this project on Kickstarter.
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