2-Pack CYCLAMI 700c x 18-32c / 32-47C (ALLRoad & Gravel) TPU Bike Inner Tubes with 45mm/65mm/85mm Presta Valves Ultra-Light (Include Bike Tube Patch Repair Kit and Tire Levers)

Installed these in April and going strong in November with no issues. Installation easy, and the best part is no faffing with sealant, and no weight penalty.These are a no-brainer.

GARBAGE. DO NOT BUY. Initially only 1 of 2 tubes was a problem, but after a couple more days neither of the 2 will hold air for more than an hour. Have only gotten 1 ride in since purchasing. No punctures, appears to be the seam on the tubes that fail, which is consistent w/ many of the other reviews.Returned the unused spares set I bought. Having a good experience w/ the Tubolino(?) ones (I am not a paid advertiser). Seems the chinese ones are all junk. Unfortunately, have to pay up for the better brands if you want to run TPU tubesOriginal Review:1 of the 2 tubes are fine. Having a complete mystery nightmare with the other. One of the 2 tubes will not hold air. Ends up totally and completely at zero pressure, as in used condom level limp, within a few hours to a day. YET WHEN I PUT IT THROUGH WATER TO LOOK FOR THE LEAK, ABSOLUTLY NOTHING. I am old guy who has been patching bike tires for 40+ yrs. Think I know what I am doing, but am completely mystified by this one. First time it happened assumed I had forgotten to close the presta valve. Next time was guessing the vale was bad, but no leaks at the valve under water no matter how I try to induce. Am many cycles through this game, am certain I have been fully closing the valve after that initial go round. But always at zero pressure within a day at most. Meanwhile, the other tube is great. ANYONE HAVE SIMILAR EXPERIENCE, OR DOES THE VENDOR HAVE ANY IDEAS??

From order to delivery took 2 days, so nice fast shipping. Items arrived and I verified they were the correct size that I ordered. So, now on to the product. These are super light. One tube is about 1.1 oz (31.2 g)...and that's about a 6th of the weight of a standard butyl rubber inner tube. So, there's the potential of shaving a little more than half a pound just by switching from butyl rubber tubes to these TPU tubes. I inflated each tube just enough to be able to test for leaks. They both held their air for over an hour, so I know they arrived without any punctures.The material is really thin and it really makes me wonder how well these will hold up. The base of the valve stem does appear to have a thick reinforcement, but I have seen a couple of photos where those have easily ripped. There's no retaining nut on the stem like I'm used to...but from what I've read, those are kind of old school and people have found they're not really needed. I don't know if that will be the case or not. With a typical butyl rubber tire, the stem usually "points" to the inside when it gets inflated. I noted that with these, their natural position will point to the side when inflated. Will that cause some additional stress at the base? I don't know...maybe? I'm also a little nervous about the seam where the tube seals. That looks a little sketch and I'm not sure how confident I am that it'll hold when up at 90 psi. We'll see I guess!The kit came with only a single valve cap...so I guess I'll have to make sure to hold on to it if/when I need to change the tires. There's a pair of plastic tire levers...great, I'll add them to my collection. And then there's a patch kit. There are 4 patches and then what appears to be 2 valve base patches. I'm assuming that's what they are...the instructions don't really address the patch kit at all and the website isn't loading.I'm not so sure about these right now. They weren't expensive so I figured I'd give them a try. My thought is that they're so light and take up so little space that they could be an acceptable spare to carry in my pack while on a ride. Hopefully, if I ever have the need to actually use them when out on a long ride, they'll hold up. I'll come back and update if/when they do eventually get used.

The 700x32-47's didn't come with levers as advertised, otherwise great tubes. Being so much lighter than conventional tubes they make my wheels much spritelier and dynamic feeling, increasing felt speed while riding. Only a few dollars more per tube than butyls, they are well worth it.

I hope they don't go the cheap route, the recipe is working for now. I recommend these tubes for all serious riders reluctant to go tubeless.

These have been showing up on my social feeds for a little while. Not these, specifically, but these "new" TPU tubes. First thing, the material is actually perfectly suitable as a bicycle tube. But to be clear, they are NOT any more puncture resistant than your traditional rubber tubes. where these fail is in their construction. For all 4 tubes, they have all leaked air at the seems where the material is joined together. This is extremely frustrating because they will seem perfectly fine at first...but will eventually lose air. And the time period for this to happen is anywhere from 10 minutes to a few days. I love the concept of these, because they are quote small when rolled up...but they really don't perform. NOT dependable at all...

I was able to complete one ride on these tubes. Ride was 26 miles. They felt great. But then the rear tube randomly blew sitting in the garage. I wasn't even on my bike and I suddenly heard a hiss and the tire went flat. No idea what caused it to blow. No puncture or anything. I replaced the tube with a butyl tube. Left the TPU tube up front and got about 3 weeks out of it before it got a small hole and wouldn't hold air. Again, no puncture, just randomly got a hole. They say these tubes are stronger but they definitely are not. They are definitely quick and light but too unreliable for me. I would not recommend them.

Installed these in some new wheels with 28c tires. The install went well and no install pinch flats like I sometimes get with butyl rubber tubes. So far have a couple of rides on them and no punctures. I will update the review if I encounter any issues. These are very thin and light and did come with patches and tire levers.

resistente , cumple las expectativas

Haven't put a lot of miles on these yet, but seem to be very well made. I expected the levers to be cheap throw-aways but they also look to be well made and durable.

Recently used one no problems.nice and small fit easily in pocket better than carrying standard tubes

The are very light and easily fits in my emergency road kit, but installed and inflated at recommended pressure, it deflates by the day and after only 6 days they are 15 PSI only. Better switch back to butil tube

Creo que son las peores cámaras que he comprado, una la 1a salida pinchada y la 2a a 3er día, nunca me había durado tan poco una cámara, creo que hasta las de caucho son mejores damasiado delgadas a comparación de otras marcas muy superiores