The TREK Flare RT Rear Red Bike Light in black is a stylish and durable rear light for cyclists. Made of silicone and plastic, this LED light features a hi-lo beam and flashing options, making it versatile for various riding conditions. With a water-resistant design and a compact size, this Trek brand light is lightweight at 40g and easy to attach to your bike. The USB rechargeable feature ensures long-lasting power for your rides.