Wide application: the strap extender is good for office workers when they work for a long time or doing exercise, bicycling, they can help to solve the problem of redness and discomfort of the face and ears caused by tightness or unfit size. Reusable and durable: this ear hook is made of durable PP flexible material that can be repeatedly washed without worry about damage and degradation, comfortable and easy to use. Protect your ears: compatible with most of the ear-mounted face covers, you can change the buckle in seconds and reduce the pressure and ear fatigue on the ears. Adjustable size: the strap about 13 cm/ 5.11 inch in length, includes 3 adaptable card position, adapt to various kinds of face covers, suit for adults, kids, men and women. Tanness 10 Pack Ear Extension for Face Masks.