Hat Main 52% Recycled polyester, 48% Acrylic. Lining 100% Polyester. Filling 67% Thinsulate® Polypropylene, 33% Thinsulate® Polyester. Hat Main 56% Recycled polyester, 44% Acrylic. Lining 100% Polyester. Filling 62% Thinsulate® Polypropylene, 38% Thinsulate® Polyester. Hat Main 70% Recycled polyester, 30% Acrylic. Lining 100% Polyester. Filling 62% Thinsulate® Polypropylene, 38% Synthetic rubber. Negro/azul marino/gris - Knitted Thinsulate Lined Beanie 3 Pack