Fits more tightly than many other sweaters. Great to wear casually, to exercise in, or when you are fighting for your right to bare arms. Product DetailsAir Jet Spun Yarn. Double lined hood with matching drawstring. Double-needle stitching. Set-in sleeves. 1x1 athletic rib knit cuffs with Lycra(R)MATERIALS:8 oz 50% cotton, 50% polyester.