One size fits all, fully finished/sewn top and bottom. 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. Not intended to replace other recommended measures to limit the community spread of COVID-19, such as social distancing, washing your hands and refraining from touching your face. Should be washed after each use. Thoroughly wash your hands after touching your Fan Mask. Please visit the CDC website for more information. Made in the USA by WinCraft. Disclaimer: Due to the risks associated with COVID-19 these products are not eligible for return.