Featuring the 1966 Penske Corvette, this is a poly-cotton sweatshirt that is machine washable. It is made of a 50/50 cotton/poly blend and crafted with air jet spun yarn to prevent pilling. The sweatshirt is double-needle stitched throughout and features a banded bottom. Additionally, it has 1 x 1 athletic rib with Lycra for added durability and stretch.