Ebbets Field works over two hats for the Billykirk line. The No. 323 Five Panel and No. 324 Six Panel caps by Ebbets for Billykirk are all made in the U.S.A. and feature olive wool and heather grey wool respectively. Both caps feature the custom Billykirk Hammer and Maul felt logo in color and grey out. Available now online in units of 30.