Just got our cooling machine and couldn’t be happier with it. Ordered wrong thing at first and we were so pleased with how they worked with us to get a refund and then the correct item on order!! So much easier than trying to manage multiple ice packs. Stays securely where applied. GREAT cooling! It will make a huge difference in my knee recovery and my husbands two knees coming soon. Will recommend it to anyone we know who needs one!