100% acrylic, stretchable rib-knit fabric with Carhartt label sewn on front. Product Details STYLE: A18-BLW Material: 100% acrylic Features: Thick acrylic yarn makes this men's hat a warm option for the colder months. Soft to the touch, the stretchy rib knit creates a stay-put fit Colour: Black & White Size Range: One size fits all