These Biohazard black-and-yellow rectangular sunglass cases will change everything that you know about this type of accessory. Normally, people feel like they don't need to invest in this kind of item. You might decide to put them in your pocket, jacket or bag as you head out into the world. Although all of these options can work temporarily, it's important you do what you can to take care of your shades. If you decide that taking care of your sunglasses is not for you, don't be surprised if the condition of your sunglasses falls by the wayside as the years go on.