Under Armour Baseball Hat Red Stretch Fit Cap Size Medium/Large The Under Armour Baseball Hat in Red is a stylish and functional accessory for men. Made of lightweight and breathable polyester knit, this stretch fit cap is perfect for casual wear or travel. The solid red color and classic baseball cap style make it a versatile addition to any outfit. Designed for comfort and a perfect fit, this size medium/large hat is sure to be a go-to piece for any man's wardrobe.