Review on Compact Mini Bike Pump & Glueless Puncture Repair Kit - Presta & Schrader Compatible - 120 PSI Tire Pump for Road & MTB - No Valve Changing Necessary by Lance Gunn

Excellent customer service. I actually didn't know much about the "Presta" valve on my bike (new bike with flat tires). So I wasn't familiar with the "latch" on valve stems (looks like a little crown that turns to tighten/loosen). I emailed Vibrelli for information on how to fix this issue and they responded within an hour or so. At that point I really understood, but they were still responsive to help. They have a great little tutorial video, but the only thing missing was an explanation of valve stem "locking". I've inflated hundreds of bike tires in one day, but this was the first Presta valve I've ever seen. Anyway, the pump itself had two modes if you will, which was cool too. When the pump handle is unlocked (turned to one side), it can have a longer handle to pump more air at lower pressure (good for filling a flat tire faster). Then if you want higher pressure, shorten the knob again (turn in the opposite direction) and it will push out a higher pressure to fill the tires for most sport bikes (thinner tires require higher pressure). Accessory and easily attaches to my bike with the included plastic bracket. The only question I have is what is the small velcro loop for? I couldn't understand. :)