Never be left with a flat with the Topeak Ninja P Mini Pump. Expertly designed to be ultra portable, this incredible pump is super lightweight and is shaped to be concealed inside the seatpost of your bike. Because it’s hidden and out of the way, the Ninja P Mini Pump will have no effect on your aerodynamics as you catch some serious speed. Additionally, the powerful pump is made to still be accessible so you can pump up in just seconds. The Ninja P Mini Pump is outfitted with a rubber mounting ring to stay securely in place while the included position indicators help guide you to your ideal seat height. Compatible with round seatposts, the Ninja P Mini Pump is made with CNC aluminum and plastic to maintain its slim and lightweight shape.