Bicycle pumps aren’t exciting or sexy, but they are a pain in the neck to lug around or forget when you need one.
PostPump might solve the problem, as it’s builtin to the bicycle saddle:
The technical specs:
Integrated flip-to-fit Presta/Schrader valve adapter
Only 40 strokes to reach 50 psi in a 20″ × 1.5″ tire
Stainless steel foot stand
Dimensions: 33.9 × 580 mm
Weight: 718 g (25.3 oz)
Full information on their site