Nylon Made in the USA Patented Sweat Seal - Channels sweat back and away from the eyes, face, and glasses; no more burning eyes from salty sweat dripping into them Maximum Absorption - Dryline fabric absorbs, wicks, dries quickly, and kills odors Unisex design; made in the USA Dawn and Evening runners - Look for our highly reflective Illuminator Silver Velcro Adjustable Headband