There's no reason to walk home when you have Bontrager's Air Rush Road pump. It's a clever 2-in-1 CO2 inflator and mini pump combo. Its compact size stows away in your jersey pocket and it's light enough that you won't even notice it. Plus, it has a regulator for safe, controlled inflation.
I bought this pump for it's size and because it allows for use of the cartridges and also for manual pumping. The cartridges were easy to use. I was very cautious my first time using it since i had never used a co2 cartridge before. But I found it easy and safe.
On the other hand, the manual pump doesn't allow to fully inflate my road bike tires. I also found that it was difficult to pump while trying to hold the wheel in place. Additionally, you have to careful, because of all the motion that the manual pumping causes, not to bend the the tip you have to unscrew in a presta valve, which sticks inside the pump. The risk of it bending from you insert it into the pump, but while it's inside the pump and you are inflating the wheel.
The product is a good idea at offering both options, but not practical.
3 stars because of size, and because of CO2 feature.
Bottom LineNo, I would not recommend this to a friend