Great size. Stays cold for an hour or so. Since you get plenty in this order, you can always have a couple in the freezer waiting for when you need it. Haven't used the hot/cold pack hot but I can't imagine that it would be anything but superb.
My Marine g/son is currently deployed in Afghanistan where the temp is commonly 100-110 degrees. He takes these with him on missions away from base camp to help him cool off when the heat becomes unbearable. We tested these cold packs at home before sending them overseas, and the packs stayed very cold for at least 30-45 minutes, and relatively cool for the next hour. Best price I could find on quality cold packs that lasted over 15 minutes.
After knee replacement this little machine made recoup so much easier. It stays cold for a couple hours (so hubby could go to work and leave me to recoup!). It could help a lot of people and was well made.
If you need further help or information please visit our Online Help Center