It's hard to find good-quality rain boots for me, since I wear size 12s and have large calves (17&#34; around at the largest). These, however, are very impressive! They do seem to run a slight bit small, but not uncomfortably so. They fit my calves snugly but are not uncomfortable, even with skinny jeans on underneath - the upper has some give, which helps. They also have very comfortable and removable insoles.<br /><br />The only reason I'm returning them is that they're too warm! I have other boots for winter and want a pair of lighter rain boots for the warmer months, and with these I'd probably get overheated.