Step into the legacy of the Cubs with the New Era Cubs 9FORTY A-Frame UPSD Arch Cap. Crafted from 100% polyester, this baseball cap gives you a smooth, comfortable feel without added weight. Keep your fan energy strong and rep your team from first pitch to final out with the New Era Cubs 9FORTY A-Frame UPSD Arch Cap. Part of the 9FORTY A-Frame Arched collection. 100% polyester.