Soft Silicone Material: - The mask extender material is premium built-in silicone, soft and non-slip. Adjustable for Children and Adults: - Three levels of circumference ensure the mask is tight, suitable for many people including children and adults. Relieves Ear Pain: - The mask ear strap hook is compatible with most earbuds on the market and relieves the ears of pressure and fatigue. Easy to Use: - After wearing the mask, pull on one of the mask straps, hook the extension gadget, then finish the other side. Easy to Clean: - Made of silicone, the mask strap extension can be cleaned with alcohol or water, can be reused without deformation. Product Features: Please place the ear hook on both sides of your face mask and adjust the 3 position tightening hook according to your needs. The face mask can be loosened and tightened by adjusting the hook, you will feel more comfortable and relieve the pressure from your ear due to long term wearing of the mask. Mask ear strap hook Ear protector anti-leakage extension hook Key features stylish design, light weight, sterile, flexible soft silicone material, can be self-sterilized, easy to clean, unlimited reuse non-allergic , adapts perfectly to your head. Specification: Product size: 15.8x1.5x1.2 cm Net weight: 8.5 g each Material: flexible soft silicone material Package contents: 10/5/20 Pieces * Mask strap extension