For convenient, secure & sanitary storage of your face mask. Attach to your keys, coat or bag with the easy-to-use keychain & always have your face mask to h&. HOW TO USE Fold your face mask in half, then fold in half again & inset into the AB Mask Carrybag. Secure the tab closed. Attach AB Mask Carrybag to your keys, coat or bag via the key chain clip.