Trial run; after 2 hours of yard work it was still cool to the touch.
Intended purpose; ATV racing.
90* humid day, and I was pushing my 43 year old overweight body as hard as I could. Cooling affects were still noticeable beyond 2 hours. At 2:45 when I took it off, the vest no longer felt cool to the touch at all.
Perceived affects of the wrist things didn't last beyond an hour.
The "belt" is adjustable. I didn't fasten it the first day because it was way too tight and I didn't notice the adjustment on the inside.
Comfortable to wear, weight wasn't noticeable until the cooling affects wore off.
Activating the cool packs was a PITA. I recommend trying the washing machine method. The manual method took forever.
Would definitely recommend vest, would not purchase the wrist things if I had a do-over.