The B-Line is our cold weather face covering that features our newest protective detail. The nose bridge web flips up to create a seal that prevents cold air from being pulled in as well as exhalation and condensation from fogging up your glasses. This new feature also creates an extra layer of seal in conjunction with the copper wire nose form. The body of the mask is constructed of traditional Recycled wool Troy Blanket Lining used in Workwear Jackets made in the 30’s 40’s 50’s and 60’s. The inside lining is fused with 100% Poly Interlining and it offers structure to the mask as well as a second layer of filtration. One more feature is our Folded Loop label which serves two functions, first it wicks skin oils and it also has a place to personalize it to avoid possible mixing or loss. Adjustable straps help insure a secure and snug fit. We have a limited supply of this fabric so get them while you can. Stay safe and warm out there!