A WORKWEAR JACKET INSPIRED BY THE BALLPARK’S GROUND CREW History: The Grounds Crew program celebrates the workers who kept the baseball diamond in tip-top shape. The jacket is made from a soft but durable cotton with stretch. The jacket is lined with a lightweight cotton, which makes it ideal for spring and summer. Details include a metal zip closure, hand pockets, a chest pocket, sewn felt chest and back lettering, and tab adjusters for dialing in the fit.