Panaracer Self-Sealing Bicycle Tubes, Presta Valve, many different sizes, 33-40-48-60 mm valves, single or two pack

this is the best price I could find anywhere for a pair of 27.5 p.v. self sealing tubes. top quality tubes with plenty of sealant (slime-ish) inside. I'll be buying more of these in the future for my other bikes- I hate flats!update- this week I rode through an open field and picked up at least 40 thorns- most of which punctured my tires. Thanks to these tubes all the punctures were instantly sealed and I was able to complete the remainder of my 30 mile ride.

I bought three of these because they replaced my old punctured tubes and I thought I wouldn't need the 3rd one for quite a while. Definitely worked great for me when pulling thorns out of my tires.HOWEVER, I did end up running over a piece of glass, which got lodged in the tire, then shot up at my face while spraying me with the gel. The directions say to not let this touch your skin, so it's fair to say I'm pretty scared to use this product ever again if it means a puncture might send debris and the patching fluid into my face.

While one of these tubes works just fine, the other is proving to be a nightmare. The valve for one of them is currently clogged with the sealing goop, and from the looks of it it'll take several hours to clear out going by the pace at which I've been doing it currently. If you're willing to put up with a 50/50 shot of having a great tube, go for these.

This tube performed worse than a normal tube when, within an hour on a trail around my property, I twice suffered the same type of flat on the same tire/wheel on the same rock. This tube leaked its air even faster than the normal tube. And if you want to patch it, you have to first clean off all the "self-sealing" compound...

This will not prevent you from requiring a patch or adding extra slime to the tube. My tire went flat after I removed the cactus thorn. The slime did exit the cactus thorn hole. The tire stayed inflated until the thorn was removed which was very good. Parts were delivered on time and were as described.

One star because I haven't used them yet.Why didn't I see these have presta valves.Probably because I didn't know tubes had anything over than Schrader valves.What spandex wearing idiot came up with these? I hadnt changed a bike tire in 30 years, but I figured , it ain't rocket science, I can still do that.My wifes bike was slowly losing air and it wasn't the valve, so I just ordered new tubes and tires while I was at it. Now I have to order adapters or go through the hassle of returning these.

Installed just like any other tube, but one exploded inside my tire. Happy with the Amazon exchange for a new one. Not happy I had to install twice. Hoping they hold up after continued use.

Work, tried and tested! Fixed itself almost intstantly after removing a piece of wire from the tire. Would recommend, they have also handled my MTB ventures w/ease

No pesan nada, realmente añaden unos cuantos gramos a las llantas, pero nada del otro mundo. La verdad muy buenas, solo que a mí me costó trabajo inflar las por el hecho de que es francesa.

Pedí el paquete de 2 piezas y me enviaron el paquete con una, además que no venía bien doblada la cámara.

Buen producto

Too heavy for mountain biking. Don't buy

Han salido muy resistentes, las recomiendo