Designed and developed in collaboration with Bill Nye this collection of AIRBAND Masks and Gaiters reflects not only Bill's unique style but his love for all things science. Bill Nye will be donating his proceeds to the Institute for Health Metrics and Evaluation (IHME) at the University of Washington's School of Medicine. The 3-Ply gaiter has an outer-layer fabric made from polyester and spandex, a middle layer with a built-in nanofiber membrane and an inner layer of soft breathable mesh.