Big deal, right? It’s just another pair of sunglasses from a sports company? It turns out that the Nike Hindsight cyclist’s glasses have an added function that just may save your life.

The trouble with riding around on your bicycle in town is that it’s far too easy to get mowed over by the cars on the road. You really have to stay on top of your game and be completely aware of your surroundings. The Nike Hindsight has a carefully arranged high-power Fresnel lens on the extended side of each lens.

In essence, this lens captures the view from the sides of the wearer’s head and pulls it a little closer to the peripheral vision. It’s not quite a rear-view menu, but it provides awareness of moving objects in your blind spot. And that could mean the difference between a close call and a trip to the emergency room.