Ride more pump less.
Introducing the self-inflating inner tube from PumpTire
Diffusion is the slow loss of pressure as air escapes through the rubber inner tube and tire. PumpTire inner tubes are the only inner tubes that replenish the air in your tires as you ride.
The PumpTire inner tubes have a protective design that resists most punctures. The design protection extends completely around the wheel and with a minimum of additional weight.
The patented PumpTire technology incorporates a pumping mechanism in the inner tube that pushes air back into the tire as you ride. Once the desired pressure is reached, the system stops drawing in new air.
The rendered image shows the patent-pending, user-adjustable control valves that allows you to dial in the perfect pressure.