Step into South Side style with White Sox edge in the New Era White Sox 9FIFTY A-Frame Classic Cap. Crafted from 100% polyester, this baseball cap mixes clean structure with everyday comfort, making it a go-to for any rotation. From extra innings to overtime moments, the New Era White Sox 9FIFTY A-Frame Classic Cap keeps your Chicago energy strong. Part of the 9FIFTY A-Frame Stacked Retro collection. 100% polyester.