Neck tube with HeiQ ViroBlock A winter mask that allows you to enjoy winter better during this special Covid-19 period. Ideal for skiing and snowboarding (permitted as mouth and nose protection in Switzerland). For additional protection, the winter mask is treated with Swiss “HeiQ ViroBlock” technology. The longevity of the product has also been proven: After washing 30 times at 60 degrees, the material and structure have changed by 0%, which speaks for the longevity of the product. More information about the mask is available here and below. Fit: :The masks are deliberately cut very generously so that there is enough room to breathe freely during active movement. Available in 3 sizes (S, M and L) Recommendation: size S for children and people with a small head, size M for people with a medium-sized head (approx. 55 - 58 head circumference) and L for people with a large head.