<br>Anti-skid treatment: <br>Mask extender hook has anti-skid treatment on the surface to ensure the mask not loose or fall off. It also suits you well when wearing cap or goggles. <br> <br>Must-have for masks wearing: <br>Designed for reducing the pain when wearing masks, can protect your ear from rope fastening. <br> <br>Adjustable size: <br>3 Button design provides different size choices to fit men, women or teenagers, allowing you to adjust the hook for getting the tightness you need. <br> <br>Specifications: <br>Color: blue, pink, white and grey <br>Material: silicone <br> <br>Package includes: <br>12 x Mask strap extenders <br> <br>Warm notice: <br>Please allow 1 to 3 cm errors due to manual measurement. <br>Please allow slight chromatic aberration due to different screens and lights.