Rather than spending your riding life in the dangerous dark, embrace the illumination of Portland Design Works' Radbot 1000 Tail Light, a pint-sized but powerful rear beacon with brightness that rivals that of a car tail light, so you'll be easy to see when you're pedaling along with traffic. With three modes—zZz pop, Cornea Blitz, and Rock Steady—you'll be able to choose between a strobe, flash, and steady beam, and enjoy up to 30 hours of power on two AAA batteries. The Radbot's water-resistant case won't fizzle the electronics if you're riding through a rain shower, and convenient seatpost, rack, and backpack mounts let you slap it on wherever you want and pop it off when you leave your bike outside for the afternoon.