The Pump Pump it’s the small amount of air that inflates bicycle tires. It produces up to 120 psi and recharges via a micro USB port. Fumpa fills up to six tires per tree. Saving space minimumpa can fill two tires per case, while nanoFumpa makes one or two tires up to 110 psi. All three are compatible with Schrader, Presta, and Dunlop valves.