
Tubes are usually just tubes. Boring hoops of butyl rubber with a valve in it. The Schwalbe tube has the best designed valve I've seen in ~30 years of riding Presta valved bikes. It seems to be such a simple thing, but the taper at the base should help reduce the risk of having the valve rip out of the tube. I haven't been able to tell if it will last very long, but if the rest of the tube is as well designed and built as the valve, it should be a good one.
I have used many different brands of bike tubes over the years. These are at the top of my list for overall quality and they do hold air pressure for longer that other tubes I�ve used.
Reviewing a butyl tube, is kind of like rating toilet paper. When it is better than average, it is noticeable! When I opened these tubes, I definitely noticed some attention to detail that other tubes do not include. So far, they are holding up well....
I gave up on most other brands for tubes because of problems with failing valve stems, slow leaks, and blowouts. These tubes are bomb proof and hold pressure for over a week without noticeable loss of pressure. Worth the slightly heavier weight for those long rides on remote rural roads full of hazards and debris.
I needed some new tubes and I couldn't get my regular brand so, I took a chance on these. Fortunately, I haven't needed them yet. I do hope they serve me well when the time comes.
Worth the extra couple bucks over generic tubes. They just have a quality feel to them. The presta valves are not fragile. They maintain air pressure very well too. This was my first experience with this brand, but I think they may have bumped Continental down a peg in my tube hierarchy. Will definitely buy these again.
After doing some research on inner tubes, I found that this brand is known for its build quality. So far I am happy with the quality of the tubes and have confidence that they will be long lasting.