A blend of luxury cotton and spandex rib, a little bit beefy and just fitted enough to feel like a second skin. another brilliant staple piece that’s perfect for layering or rockin' with a pair of jeans. Fabric: all colors except heather grey: 95% cotton, 5% spandex | heather grey: 90% cotton 10% spandex Care: gentle machine wash cold. do not bleach. tumble dry low. warm iron if needed. do not spot treat, or add softener