I love these boots!  I normally have very large calves (circumference of 15.5 inches), thus, usually, have a problem finding boots that fit when I zip up.  With these, I'm actually able to zip them up, even over a pair of skinny jeans.  That tells me that the suede material is pretty flexible.  I wear a solid size 8, the size 8 boots I got fit my feet; snugly but not uncomfortable.  I would have had no problems had I gotten a size 8.5.  In fact, if I get another pair, I'd definitely get the 8.5 size.  The soles are squishy, but firm; they feel like I'm wearing sneakers.  Comfy, cute boots that I got on sale, so I can't complain!  I certainly recommend these!