Our Made in USA, 1 Hole Ribbed Acrylic Face Mask with 3M Thinsulate Platinum Insulation is perfect for any outdoor cold weather occasion. The platinum insulation is 100grams and more flexible than normal 3M Thinsulate Insulation. 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 2 Colors.