Watch your back without turning.
Always be on the look out and don't let anything slip you by. Easily see what is going behind your back wearing the Rear View Spy Sunglasses. This black framed glasses are the right cover up tool for all of your spying needs. Measuring 5" wide with small thin mirrors on the sides, it still lets you see what is in front without any obstructions. Though the lenses are dark they are only for cover up and don't really offer any real UV protection.