The special design lets you can put it anywhere and will not occupy space. Girls can put them in bags and save more space for cosmetics. The driver can put them anywhere in the car for spare time. You can easily put it in your pocket when traveling. They have ultraviolet tinted lenses to provide protection from UV400, UVA and UVB rays. Polarized lenses are very effective in blocking all sorts of harmful light and reducing glare, giving you clear vision for driving or other outdoor activities and relieving eye strain.