In my experience they are definitely comfortable and true to size. A lot of people say they are tall, I would say they are short if anything. I'm 11 and ordered 11 and they are almost perfect, maybe a little tight at first. I have very sweaty feet and was looking for options for people like me and was recommended Sanuk shoes as long as they feel reasonably breathable and wearing socks is a plus. After 2 days I have noticeably less smelly feet but time will tell. It is very typical to wear new shoes. They are very light and wear out quickly. It should be noted that when they were first broken they were very slippery indoors. Especially on polished or hardwood floors. rzunimag.