Pirelli P Zero SmarTUBE Bike Inner Tube, Road – Race, Innovative Lightness & Handling, Superior Puncture Protect, (1) Yellow Inner Tube, 42 or 80 or 60mm Presta Valve / 700c Sizes

La verdad es que van muy bien. No las cambio por ninguna otra marca.

良い商品です。タイヤが軽くなり走りが良くなり快適です

So far, this particular model has performed remarkably. I only suffered one puncture and that was after the 1000km mark, hitting a very sharp piece of black metal which also cut deeply in the tyre. I use it in combo with a Pirelli P Zero race which has a moderate/decent amount of puncture resistance, and going through some gravel and very uneven and dirty industrial paths.

Works great but I did have a rough start. I installed this on the road after getting a flat with a regular tube. This tube also went flat after 1/2 a mile. It wasn't the tubes fault, the tire had a cut in it and I should have protected the tube from the cut. Later I patched the tube but I filled it with air before installing back in the tire. That was a mistake, don't do that. This tube expanded so much that the tube split open and was ruined. All my fault. Lessons learned. I bought another new tube and tire and it has been good since. Been on many rides, no issues.

Excellent