Love this boot!! Really comfortable. Its a bit bulky and at first you think it may be a problem but you don't notice after you have worn them for a while. I ordered a size 9 but Im usually a 8 1/2 because thats what other reviewers suggested and I do think if I went for the 8 it would have been too small. The neoprene lines the whole boot and there is even a contoured foot bed which makes them feel soft and cushy. First time I worn them I took the dog for a 2 hour trail walk and my feet were dry, a bit warm but definatly no soreness.