i read the all the warnings about getting a size up because this top runs small, so instead of ordering my usual xsmall, i ordered a size small. well, i should have gotten at least a medium. it is very tight around the chest, stomach area. i am 5'6" but i have a petite frame and small bust, yet i could barely breathe in the small. it is nice and long though and feels really warm, but i am still returning it. the material doesn't seem to have the give that wool does.