Schwalbe SV17 Inner Tubes 700 x 28-45c / 28" 27", Presta 40mm Valve (2 Pack)

I put this on my wheels/tires on the day one no issue so far so good!

These are substantial inner tubes. I'm quite willing to take a little extra weight for the protection they provide. I first used those provided with the Schwalbe Marathon Pro tires. I managed to pinch flat both tires going head-on over a bollard hinge (watching a deer). The punctures, caused by the rims smashing the tubes wall through the tire against metal plate, were small and there was only one puncture rather than the usual two. I could have patched the tube, but circumstances were against that (bad area, sun going down) so I opted to walk home. But I liked what I had seen enough to get the same tubes.

This installed and worked without a leak. Will check after a few days to see if no abnormal slow leaks develop. So far so good.

I was a little nervous about buying these because they claim to fit so many tire sizes (mine are 700x28), but the price was good and I could always just return them if they weren't good. They fit okay, but they are kind of heavy. I assume they are heavy because they're made to stretch to fit larger tires. I'm just a recreational rider and I don't want flats, so a little extra weight just helps me get a better workout with fewer flats.

Looks well made and holds air like a champ.

I had one inner tube cut from the valve stem.I called Schwalbe support and he said it could have been the lining of the wheel. They sent me a new replacement. I would highly recommend this brand !

Well made bicycle inner tubes. I am slowly replacing the tubes on my bicycles and in my seat bags with these because I believe they are sufficiently rugged without being excessively heavy.

80 miles a week. Two years with no flats. I also Schwalbe Green Guard tires with these tubes. Thousands of miles with no flats.