Cotton Sweathshirt - Heather GreyAnother Icon. Cotton Sweatshirts first began to be used as athletic garments in the 1920's and 30's and always featured full length ribknit cuffs and hems and the V shaped inserts in the neckline. The Wythe Sweatshirt stays true to these details, and adds a subtle curve into the V insert (loving called "Doritos" by some vintage aficionados) that gracefully matches the curve of the neckline.