Phase Change Cooling Vest by Icy Wrap for Men & Women, Hot Weather, Ice Reflective Vest with 30 PCS Ice Packs, High Tech Phase Change PCM material, stays cold for 1 hour +.

Whatever was placed in these "packets" was inconsistently created throughout the entire vest. Some packets are entirely liquid, some are solid chunks and others are some white crystalline-looking formations.It did not keep me cool in the 95° weather spell we just went through.I need something that works for 4-5 hours out in real field conditions, and this isn't it!PLUS I had to wait for 3+ weeks for delivery. Very disappointed in Amazon and whoever created this vest. It wasn't a low-priced item either. But I feel like I lost money I'll never get back.I couldn't rate it at a Zero, but that's what it deserves.

Would not buy again.

Cooling does not last hours. It lasts about 10 minutes. ABSOLUTELY TERRIBLE. Unfortunately I think I'm outside my return window

Website said cold would last several hours. My experience was max 30 minutes.