My dog is a rescue...He has two issues... he is a northern mix (double coat) who would not lay on anything soft and apparently old leg injuries.... Unfortunately my home is slab on grade so there are plenty of cool places to lay on however even on carpeted areas I noticed that my new found companion would limp after laying in one place for a short period of time. Hating that he was not comfortable both hot and limping... I tried other beds with no success... then I found and purchased a cool bed III hoping for the ultimate solution. HUGE SUCCESS!!! I am happy to say that we are both very happy with the purchase! In fact I have two and contemplating a third. I have one in my home office where he can be near me and comfortable on all levels. No limping after laying for several hours! What a blessing! The fact that it stays cool is the reason he "stays put". This is the best product I have purchased for my new found friend and would recommend it to everyone! After all we hate to be hot and lay on hard surfaces... why shouldn't they like or deserve similar creature comforts? Thanks so much!!!