Impero Ultimate II Frame Pump

Measured my top tube, 52 cm, and the medium fits perfect. Great quality!

When you're on the road and can't reach your Silca floor pump then this is the only pump that's 'next best'

After reading the many reviews about sizing, I was concerned. But I measured my frame as specified and the fit was perfect. It's important to understand the pump goes between the seat tube and head tube. That's what you must measure. Also, I found the pump is actually adjustable in length (the handle screws onto the shaft and you can lengthen the pump in this way) so you can get as tight a fit as you wish. Finally, the pump is PRESTA-ONLY and there is no conversion to Schrader. But you won't find schrader on many bikes that'll want to use this pump, so no big deal IMO. The pump functions wonderfully, about 70 strokes to get my 29 inch marathons up to riding pressure. If you have the wheel off it would be easy to put the pump head on the ground and use full body weight to make it easy, but I found it no big deal to use the pump in the normal fashion. So, buy it and enjoy it!