This One-Hole Face Mask with 3M Thinsulate Insulation Liner is a basic full mask is great for any outdoor weather occasion. 3M Thinsulate Insulation is warm yet lightweight, powerful yet thin. It helps trap body heat, while allowing moisture to escape. This mask is Made in USA with good quality materials. Made with 100% Acrylic. Durable and Comfortable when wearing. One size fits most. Available in 4 Colors.