Topeak ninja p pumpkeep a clean finish to your bicycle and store this ninja p pump inside your seatpost dont worry about a weight penalty on the climbs as this mini pump weights in at a super light 62g a rubber mounting ring secures this ninja p pump without adversely affecting your saddle height insert this innovative mini pump into your seatpost and forget all about it until youre thwarted by a thorn or nasty road debris featuresmaterial barrel cnc aluminiummaterial handle cnc clum