I had scheduled “Total Knee Replacement” and my orthopedic team highly recommended “icing” as part of this. My wife and I researched and read all the reviews on soooo many devices. The Breg Polar Care Cube was our choice, and it really worked well. Simple to set up, simple to put on my tender knee and simple to operate. And, it works. It is not “too cold” where it hurts or numbs you. The ice and cold last for hours, there is no real “get up and change ice/water again” At first I was using it off and on all day, and towards the evening sure, add more ice. Very happy with purchase and I think price was appropriate. I really like the fit of the knee cooling pad and the wide stretchy Velcro bands that are totally removable/moveable, they let you really optimize tightness and fit. As I remember while we were researching I had a hard time finding how to measure for the size of my knee cooling pad. I think it was buried in the FAQs or somewhere else, it would be smart to make the measurement/sizing thing VERY obvious. Glad we chose this one. And we do realize we can use it for other injuries or pains, and we can buy different cooling pads for different body parts…. Good choice, can’t go wrong…