ContinentalRace 28 700x25-32c Bicycle Inner Tube Bundle - 60mm Presta Valve - 4 Pack w/ Conti Sticker

So far these are holding up on my touring bike. The Presta valves hold air without a problem. They don't add much weight to my bike and I've but $2370 miles on them so fat.

These really are everything you advertised them as! Great product! I do recommend these to anyone wanting bike tubes!

I bought these last year to run under my 28mm GP5000s and have had zero problems. I run with an ounce or two of Stan's No Tubes Tire Sealant in each tube, which is easy to inject with these tubes because the valve is removable. A couple of times I've run over something bad, got the beginning of a flat, only to have it seal itself right up before losing more than a few pounds of pressure. So while I got flats, I didn't care because I was able to finish my ride and never had to change the tube. Stan's is a miracle for me. I used to get flats every week or two (perhaps because I live in the desert and there are a lot of goat heads here.)Now, I'm about to switch out my wheels for a carbon set and wanted to put in new tubes. I'm sure I could re-use the tubes I'm using now, but I just want everything fresh. Anyway, I bought the same tubes again because they have been perfect so far.

I really like the rubber on these tubes. They install easily and have a great size range for donating to a fellow cyclist.Caution. I've had more than one valve core fail to hold air "unscrewed". I recommend buying a cheap valve core removal tool /w 10pk of valve cores. Test the tube when you get it by adding some air (not too much) and verifying the valve core holds air "unscrewed" for an hour or so. btw. this isn't unique to these tubes, I've had other manufactures exhibit a similar problem.Recommended with caveat above.

I normally buy Bell products, but I decided to give this a try. This product does exactly what it says, I just wish they provided presta valve adapters in the box

I thought I wrote my review for this bike tube already. But the seller "just bugged" me for "a review". Then it is not my big issue to rewrite this review. So far, the tube is THICK. This bike tube looks THICK and SOLID at my "first sight and feel". The brand name of the tube/ mother company has been around business for some century old,according to my research.I keeps checking the air pressure in the tube almost everyday while my bike is still sitting idle in garage. Air is retained very good. Some $32 for 4 tubes is a great price. Stem of the tube is strangely long. But it is not a big problem. As long as the tube is THICK, SOLID, HOLDING AIR, etc. then I WILL BUY IT AGAIN AND AGAIN. Much thanks to the seller. Happy new year.

Inner tubes were perfect. Haven't had any issues two weeks in.

I've done over 100 miles kept getting flats before bike shops install cheap tires I noticed these are good rubber and I put 110 psi on the rear no flats or bursting at seems cheap tires don't last because of the high pressure. So far good over 100 miles worth the purchase .Also the fit was perfect