Purchased 3. One for each wheel & a spare. Unfortunately there were weak spots in one that I mounted which resulted in leaks when inflated. Pulled it off, patched it & now it's the spare. Not real happy, but so far things are holding up fine.
Use this tube both as a rear tire for my road racing recumbent, and to help with tubeless installation. For tubeless installation I first install a tubeless ready tire with this tube, inflate and go for a short ride to properly seal the rim tape. Then I take out the tube, install a valve, reseat the tire and add sealant
After a couple hundred miles 100 psi is a Schwalbe tire the saddle whee the stem connects to the rest of the tube separated. Disappointing for me as I just changed over from another brand to Schwalbe.
These tubes are very light and durable. They hold up as well as any on the market and hold air better than most for such a thin tube. Have used them for two years and happy with their performance. One more plus, they have dark valve stems and look great with black carbon rims!