Review on 🚲 WINNINGO Portable Bike Floor Pump with Gauge - Upgraded Mini Bicycle Pump, High Pressure Aluminum Alloy Air Pump for Presta and Schrader Valve - 120PSI Compat Floor Bike Pump by Brian Samaiyar

These are very light and thin pumps with quite good performance. It can be screwed onto a bike rack or attached with Velcro straps. You don't have to worry about the extra weight of your bike. It may not fit as precisely as you would like, but this depends on the position and size of your bike. It's as good as any pump I can think of at this price and size. If you want the confidence of having a pump on board, I think this is a good option. I've never seen a pressure gauge on such a small pump. It's not easy to read due to its size, but it works.