Glacier Tek Cool Vest Personal Cooling, 59 Degrees for 2.5 hours 8 Cool Packs, Recharge in 30 Minutes

https://www.amazon.com/Glacier-Tek-Sports-Nontoxic-Cooling/dp/B093HF1LLL Not cheap but it does have 2 sets of ice packs, uses the phase change packs that last , and you can get a good secure fit with it