I met Kay yesterday at Caldy Rugby and listened to her demonstration of the cold treatment aid. I have a spinal fusion L4,L5 and S1 and have a lot of chronic low back pain and spams. I have used a lot of cold packs but this product is comfortably the best. It delivered all the features Kay said it would and more. Cannot recommend it highly enough. It was the right level of cold, didn’t give me any freeze marks or burn and stayed cold for the correct amount of time. Would give it 6 stars if I could.