Rabbit Skins Infant Rib Tank R3406 Cotton Machine wash cold with like colors, only non-chlorine bleach when needed, tumble dry low. A great little tank in fun colors reinforced for long wear.  6.0 oz. 100% combed ringspun cotton 2x1 rib Double-needle ribbed binding on neck and armholes Double-needle hem bottom White is sewn with 100% Cotton thread