MIDIAN Air Conditioning Vest 30V High-Power Fans 20000mAh Battery Cooling Workwear for Hot Summer Outdoor & Industrial Use

Outdoors, strenuous activity may not be it's best usage. The device excels in its quiet application and though I do think it is helpful, I don't think it's the best choice for you. Instead, I think a cooling vest works better. Also, since you're sweating a lot, wearing a wicking undershirt in conjunction with a blower vest would be most effective. Research an item like this: https://a.co/d/0bFwiqYv