The Shiner Back tail light’s linear design integrates smoothly to your bike whether mounted to your seat post, seat stay, rack, helmet or fenders.

• The Shiner Back tail light’s linear design integrates smoothly to your bike whether mounted to your seat post, seat stay, rack, helmet or fenders.
• USB rechargeable lithium polymer battery for 11.5 hours of runtime from a 2 hour charge
• Steady, Courtesy, and attention-grabbing Superflash modes