This face mask case is a really handy tool to keeping your mask from getting lost or dirty. The carabiner clip is perfect for kid's backpacks, handbags, gym bags, belt loops, and more. It can also be used for other small items when not using it for the face mask, like headphones, lip balm, and loose change. Measures 4.25 x 4.25 inches. Top zipper opening. Carabiner clip zipper pull. Solid color.