this style comes up snug and a little narrow around the toes. go up half a size, especially if wearing with socks.
calf circumference: sizes 35-35.5 (14 inch), sizes 36-36.5 (14 1/2 inch), sizes 37-37.5 (15 inch), sizes 38-39.5 (15 1/2 inch), sizes 40-41 (16 inch)