Give Your Ears A Rest: Ergonomically Designed Anti-Sore Mask Strap Is Non-Slip, Does Not Scratch Ears. Reduce Pressure and Pain Companion: Mask Strap for The Back of The Head In Length, Will Work for Your Body. 4 Card Positions On The Belt Are Intelligently Spaced So It Fits Any Type of Small, Medium or Large Heads of Any Man, Woman and Kids. Works With All Types of Masks. Unnoticeable Light and Soft Surface: The Mouthguard Strap Is Black Is A High Quality Tpr Material Designed To Meet Different Needs. With Lightness and Softness, The Earloop Hook Would Not Put Pressure On Nerves. You Will Not Feel Any Strain On Your Ear or Head. Concentrate On Work Without Distraction: These Face Mask Extenders Are So Light You WonT Even Feel Them. Move Your Head or Body With Confidence, The Face Mask Holder Will Take Away All Your Worries. Customer Support. We Have Good Ears: ThatS Why We Know What Ears Want. These Face Mask Clips Are Durable, Reusable and Washable. If You Have Any Questions or Concerns To Share, Just Get In Touch With Us.