Hot Chillys' performance winter masks are not intended to be used as medical grade face masks or as a method to prevent disease, illness, or the spread of viruses. 100% Polyester inner mask; 89% Polyester 11% Spandex body Easy Breathble mesh over nose and mouth. Flaxible, costumiszable. the Hot Chillys Adult Micro Elite Chamois Solid Half Mask, a winter essential crafted from wind-resistant Micro-Elite Chamois fabric with a 3-D mask component for ultimate cold weather protection. Its 4-way stretch ensures a snug fit, while the flex fit nose bridge, padded for comfort and made from a special alloy material, won't freeze or break. With optimal airflow mesh and a hook & loop back closure, it covers nose, mouth, and chin efficiently, keeping you warm without compromising on breathability. Made from 100% polyester mask and 89% polyester with 11% spandex body, it's durable and flexible, ready to accompany you on all your winter adventures with style and confidence.