Remember how cool slap bracelets were in the 90s? They're back, and cool again. SlapLit features the same slap-to-snap technology as the stylish bracelets, but with functionality. The LED illuminating functionality makes you visible at night. It weighs 1.3 ounces and the battery lasts about 100 hours, which is included. Wear it around your wrist, upper arm or ankle. The best part is it's affordable. At $12, you can purchase a few as back-ups.