20 PCS Extension Adjustable Anti-Slip S Hook Ear Loops Retainer for Face Mask(Black)

1. One-second operation, easy and fast, free from the ear pain caused by long-term wearing of mask.
2. This tool can free your ears, make you ease at work, reduce the pain of the face.
3. With length adjuster, you can use your mask without troubles.
4. Fits all mouth face masks.
5. Made of plastic material, durable to use.