These boots feel like you're putting on a pair of slippers and they look great on, which is rare for waterproof/resistant boots. I normally wear a 7.5, but needed to exchange them and size up because they were just a hair too short.  I don't see why people think the calves are small, they fit me just fine, even with boot leg jeans tucked in. If in doubt, measure your leg before you order.  The dimensions are clearly listed on amazon.