If you ever find our mask's earloops too loose, you can use these adjuster buckles to modify their tightness for maximum comfort. Comes with a metal tool for easy insertion.
1. There are two holes in the adjuster buckle: A big one and a small one.
2. Insert hook through the smaller hole.
3. After insertion, grab onto the earloop with the hook.
4. Pull the earloop back through the buckle, then adjust freely.