With adjustable elastic straps and kid-friendly sizing, it's easy for kids to slip on a Reindeer Games Protective Mask this season! This festive face mask can be worn on its own, as a cover for a medical mask, or you can insert additional filters using the built-in pocket for even better protection. The cheerful way to stay safe, happy and healthy! One size fits most, machine washable. The masks are not intended to replace and/or bue used as a medical grade mask. The exterior is 95% Polyester, 5% Spandex and the double layer lining is 100% cotton. Not for children for children under 3 years.