Does not hold cold temperature, doesn't really work
I bought 2 sleeves to help with pain and swelling knees after sports. Items were delivered quickly but when I tested them after freezing them for 4 hours at - 17degc, they only stay cold for less than 10mins. So the therapeutic effect is very very limited. It does not as advertised stay effectively cold for up to 30mins. It's a false claim. This is a poor and expensive product that you can get better with a couple of cheap ice packs and a towel which I still use and that lasts up to 45mins








