Well to start off I tested this device when I first bought it on a concrete slab. I slept all night in my sleeping bag on this pad and woke up forgetting I was on concrete! It does the job. I am a 6'2" 242lb guy and this thing held me up off the ground. The width is just as wide as my shoulder length which may be annoying to some but it doesn't bother me at all. I haven't tested it on ice yet but will next month when I go to Mt.Rainier. So far I like this product.