If you are looking for a professional and mask extension hook, then your research is over here. That’s because our product can meet your need. Adopted of , it is practical and durable for long time use. Clip the mask on the neck or back of the head to reduce ear pressure and . Adjustable hook, comfortable extension buckle, suitable for various masks on the market. Features - Color: Black, blue. - Material: PE. - Size: 12.50X2.00X0.30cm/4.91X0.79X0.12inch. - Adopted of premium plastic material, it is durable and practical for long time use. - Extend your mask strap length so that to reduce the discomfort caused by small masks. - Mask adjustment hook can be adapted to different tightness size to relieve ear caused by long-term wearing. - Wide application. Suitable for both adults and , comfortable and non-skid. - Come with enough quantity for you to use and share them with your friends and family. Package list: 20 hooks