From the dugout to the streets, the New Era Yankees Marl Pom Knit is a home run for any true fan. Made from 100% acrylic, this headwear is built for warmth through extra innings and beyond. Cold weather’s no match for Yankees grit with the New Era Yankees Marl Pom Knit. Part of the Marled Pom Knit collection. 100% acrylic.