Teravail

Standard Presta Tube - 700x28-35C, 40mm

These seem perfectly fine, no issues with them over about 2000 miles. No flats so far, but used them with mostly Vittoria Rando II's on my Vaya. The tubes also came with more powder than many other tubes I've tried. The weight isn't a issue, they are thin, but without being risky like the lighter stuff. Had bad luck with the seams on many others out there, and there isn't good tubeless touring tires available in 700x32 that run at higher pressures and roll well.

I've used these tubes several times and they work just fine. They're some of the cheapest I've found and they're a bit heavy... but reliable.

I like the retention nut on the stem. It holds the tube in the proper position while the tire is being installed. The stem was a little longer than I needed but that was not an issue.

Perfectly fine tubes. I'd get ones with longer stems next time though. 32mm is short if your rims have any depth to them.