One size fits all, fully finished/sewn top and bottom. Made in the USA by Rico Industries. This is a fan accessory that has not been cleared for medical use by the FDA. Not intended to be used as medical grade Personal Protective Equipment, commonly known as PPE. Should be washed after each use. Thoroughly wash your hands after touching your Fan Mask. Please visit the CDC website for more information. Disclaimer: Due to the risks associated with COVID-19 these products are not eligible for return.