Made with high-performance UA materials, designed to be worn all day & when playing sports Structured design sits up off the face & lips for added comfort & breathability Water-resistant outer shell features smooth, breathable spacer fabric Anti-microbial treatment on the inside layer to help keep mask fresh Polyurethane open-cell foam lets air through but makes it hard for moisture & sweat to pass UA Iso-Chill fabric on interior lining & ear loops feels cool to the touch