These soft, quilted undershirts are warm. The fabric that touches the skin is 100% cotton, so you can dress even babies with sensitive skin in them with peace of mind(^^) One layer of this in the chilly autumn, or layered under clothes in the cold winter, will keep you warm(^^) I used these when I went back to my parents' house, so I didn't wear them very often. They have been washed and stored. (No fabric softener used)