Back to Basics TankAbout Fitted 50% Viscose 28% Polyester 22% Nylon Hand Wash Ribbed Knit Full Length When building an outfit this is the essential you need. This super soft ribbed tank goes under jackets, sweaters, you name it. We love an item that you can really get your money's worth out of. The sweater material is a brushed soft knit and has some stretch to it. The model is wearing a size small and normally wears a size 3 4 for size reference.