I will only try buying Colombia clothing if it has free shipping and free returns.  Why?  The sizing is all over the place.  I have a large Columbia tee that fits fine and a small Columbia long sleeve tee that fits me as well.  This medium was smaller than the small tee I have.  Also, the material was so thin that I could see the trees and housing around us by holding it up and just looking through it.  I was afraid I would sunburn through the shirt if I reordered and were to wear it outside.  I returned the shirt.