We can't promise that you'll run faster wearing this shirt but we're pretty sure you'll feel faster and prouder. The US women's team has won roughly half of all 4 x 100 relays ever hosted. This long sleeve shirt has the On Her Mark logo on the front, "OnHerMark.com" on the sleeve, and a photo of the winning team from 1936, along with all the US women's winning times on the back. Shirt is 50/50 (cotton/polyester) Dryblend.