The choice to wear a helmet is a personal one, but if you’re going to wear a helmet, why not try one that adds extra safety features beyond just coddling your noodle? Lumos makes a light-up helmet that’s ringed with LEDs—red lights on the back, white ones on the front, and lights on each side that function as turn signals. To engage the turn signals, you can use a little remote that attaches to your handlebar, or you can use an Apple Watch. The Lumos app for the Apple Watch has gesture recognition, so when you signal a turn using hand signals, the proper directional light blinks. The app works with older Lumos helmets too, you just have to update your firmware. A weird thing to say about a helmet, but there you are.