The Vredestein Latex tube is a lightweight champ at 49 grams. Between the weight and ride of the latex material it is almost guaranteed to improve your ride quality and bring you that much closer to cycling bliss. This comes with a price though. Durability. At half the weight of standard tubes you can expect more frequent flatting from errant road debris and pinching of the tire casing. Air loss may be another concern. You will need to check and air up before every riding session as the latex loses air faster than butyl. The tubes are also un-patchable. Bottom line is, if you want lightweight and ride quality and you are willing to do a little extra work to get it, these tubes may be a good choice.
This Vredestein Latex tube has a smooth valve stem and removable valve core. Vredestein calls the total valve length 60mm measured to the very tip. It is closer to a 52mm by other manufacturers. This length is perfect for most standard rims and also works well with the slightly deeper-sectioned rim used on the Mavic Ksyrium wheels.