Wear different face mask in each day of the week! The face mask is 100% cotton made in the USA. This mask is 100% washable and reusable. One size fits most. To get the glow effect, “charge” the material by exposing it to sunlight. The more light you give it, the more it glows in the dark! Disclaimer: This mask isn't medical-grade. This face mask is meant for general purposes, not medical equipment. ALL SALES FINAL: PLEASE NOTE THAT DUE TO CONCERNS OF SAFETY AND HYGIENE, THESE MASKS ARE NOT RETURNABLE/EXCHANGEABLE. All masks are MADE TO ORDER in a smoke-free and pet-free home.