Eric Javits developed this product to provide maximum sun protection for the face and neck. This open top visor packs easily for travel. As with any open top visor this product does not protect the top of the head from sun exposure. Adjustable Velcro® Closure in back. Inner terry forehead pad detaches for washing. Blocks 95% UVA/UVB rays. Look your best while you enjoy the sun! Independent testing in accordance with AATCC (American Association of Textile Chemists and Colorists) test methods have determined this product’s effectiveness for blocking ultraviolet radiation as well as UVA/UVB radiation. This product was awarded the highest rating of 50+ UPF by independent testing. To learn more about AATCC testing, go to www.aatcc.org. Peak span: 3.25"