Don't be weighed down or slowed down by drag. Intended for the minimalist in mind, the Topeak Micro Aero Seat Wedge Bag can be mounted underneath most seats and is designed to carry a road tube, pair of tire levers, and CO2 inflator. The bag is designed to be used on all road and triathlon style bikes. Our Aero Wedge Pack is designed with the most aerodynamic profile and is slightly narrower width eliminates thigh rub and stays hidden from the wind. Safety features include reflective strip, and a strap to mount a tail light.".