2/4 Pack Ridenow TPU Inner Tubes 700 x 18-32c Bike Tubes with 45/65/85mm Presta Valve

Much lighter than butyl tubes and has lower rolling resistance. Another benefit is it takes much less space in saddle bag but be sure no sharp object pushing against it as TPU tube is quite thin.Had two TPU tubes in road bike for a full season (around 75psi with 28mm tires) and no punctures (usually only average 1-2 punctures each year) so far. They hold air as good as butyl tubes and I do check tire pressure before every ride.

I haven't ridden on these too long, so I can't speak for durability, but I'd expect it to be the same. That being said, I found installing these to be easier than standard butyl tubes because of their bright color and slippery material. With 25mm wide wheels (18mm internal) and 25mm tires they went on without any tire levers. Each wheel felt a noticeably lighter after installed, as did my spare kit, which also has more room now that the butyl tube has been replaced. I'm not going to say it made a crazy difference, but my bike feels a little more nimble and responsive now. I may be wrong here, but it seems like my bike is much quieter with these tubes installed. I've never heard anyone or read anything mention that with TPU tubes, but it was one of the first things I noticed. Edit: after a 60mi ride in the Tour de Houston, they survived the rough roads flawlessly. I had no punctures even though I had the tires aired down a little for the rain. It's hard to say, but they do seem like they roll easier than my old butyl tubes, especially when going around 20mph or faster. Strong, heavy pedal strokes seem to result in less "whoosh" noise and more towards acceleration.

Much lighter than the butyl tubes and, to my surprise, holds air like almost all butyl ones.

They are exactly what you would expect from a tpu tube. Ride feels great. Will definitely look at buy again when time comes.I gave 4 stars for not including the patches as described. So a little miss leading but for the price still good.

I decided to try TPU tubes for better air retention after using latex for a bit, so I gave these a try. When you get a quality tube they’re great, but 2 out of 4 of the pack were leaky out of the box when submerging in water. Not just one leak, but multiple small leaks around the tube. They would hold up for a ride but would be flat the next day.Unfortunately I’d say 1 star due to quality, especially for the price. You’re basically paying almost $20 for a functional tube. Unacceptable. I had high hopes for these.

Setup my RAGBRAI bike with these to help avoid flats over the 450 mile ride. Success. No flats, no leaks and very little pressure drop each night over the weeks ride. Softer and faster ride were side benefits.

Rode several hundred miles on them without any issues. They take up barely any room in your kit bag. The pink color and graphic on the stem is a little excessive for aesthetics. One arrived defected and would leak air overnight.

I put these tubes into new Gatorskin Hardshell's last year. They hold air as well as butyl and are way lighter. The "named brand" TPU tubes are pretty expensive so I thought these might be worth a try. I am replacing the old tires after 6,000 plus miles and going to give them a new set of these tubes. They just work and I can recommend them. If you are fixing flats on you tires where you ride then I can not recommend them. No idea how you would patch them.