>>1450172the tubes will be labeled
>rim size: 700C (622mm)>range of supported tire widths: for example 25-32C>valve type: presta aka french valve>valve length: see pic relatedyou want the valve to stick out from the rim long enough for your pump to get a good grip on it but not so long that you look like a goober
valve extenders exist but you shouldn't need them if you don't have deep section wheels
i tried michelin airstop and i really like them, they're pretty supple and hold air well while not sacrificing reliability like some of the ultra lightweight tubes do. they might be a bit more expensive than normal tubes in burgerland though. continental race 28 is another tube that should be good.