Top elastic measures 4 inch and 7 1/2 when stretched out. So a calf of 15 inches or smaller may be happy in these. Very tight on my 16 inch calves. The leggings are VERY susceptible to static. I can almost never get the hair to lay down. They are not as fluffy as they look in the picture, also the hairs at the tops stick straight out, not attractive. Probably if I could go back or had seen these in person: I would not have purchased them.