Well, I drive a Specialized Fatboy with 26x4.6 tires. To say they take a little time to fill up once you get an apartment is an understatement. While I went tubeless and that solved the flat issues, I always ride with a full size tube and pump in my backpack. I wanted to replace the pump with something that can be used and put in a bag on the bike. so i got it Here's my take on it Compact design is great. Fits easily in my Aframe bag. The pump worked perfectly for me right out of the box. I intentionally blew out a tire just to fill it up. It took 2 minutes on my fat 26x4.6 tire to fill up to 20psi (which I use in the summer and spring to commute to work). The hose will get hot/hot for some people, but that's to be expected. USB charging means I can charge it. at work if need be. it just works and that's what i need. The only star removed is because the print isn't that accurate, but I can deal with that.