As the Saying Goes, “It Does Exactly What Is Says on The Tin”. If You Want to Adjust the Fit of Your Face Mask, Then This Simple but Highly Effective Face Mask Strap Is the Tool You Need. With 3 Different Fits You Will Find the Comfort and Fit of Your Face Mask Increases Greatly. It Also Means Less Touching of The Face Mask and Most All, Its Reusable.