Tri-blend: 50% Polyester, 25% Cotton, 25% Rayon
See the sizing chart in the photos. Note this is a unisex size, so go down a size from your typical size. Jillian wears a Large in all of our women's-sized tees and loves the Medium in this sweatshirt. It's still a little oversized and snuggly! (Model shown usually wears a size M and is wearing a size S.)