The Carhartt Teller Hat is a warm winter beanie made from 100% comfortable acrylic. Inside the material, there is an insulating layer of 3M Thinsulate Stretch 40g, which is lightweight, warm, and flexible while providing excellent heat retention and moisture wicking. Key features and components of the cap include: Material: 100% acrylic, 40g 3M Thinsulate Stretch insulation layer, embroidered Carhartt logo on the front, small Carhartt logo on the back. Made in Canada. 3M Thinsulate Stretch is an insulating layer that allows for movement, moving with you. The flexible insulation layer gives outerwear, sportswear, gloves, and accessories the freedom to stretch and contract with the material. The 3M Thinsulate insulation ensures excellent heat retention while simultaneously wicking away excess moisture from the fabric for all-day comfort.