Review on Schwalbe AV17 Inner Tubes - 700x28-45c / 28-inch 27-inch - Schrader Valve (2 Pack) by Donald Phi

These pipes flow like crazy. They must be a defect, the result of an incorrect manufacturing process, as they are very porous. First I install one and pump it up to the recommended tire pressure (50psi), it leaked out after two days. And yes, I screwed the valve back on and made sure it wasn't leaking. I took everything apart and put another one in, this one leaked even faster. Dropped to 32 PSI overnight. I pump in some mucus but the pressure still loses and I have to check every day.