Review on 🚴 Continental Race 28 700x20-25 S42 Presta Valve 42mm Bike Tube - 5-in-1 Value Bundle for 700c Bicycles by Kofi Wills

Out of 5 hoses ordered, 3 had holes. I only noticed the problem today while using my home gym. I changed the tire and tube on my trainer just a few weeks ago and haven't ridden it since. Today I drove it and found that the tire was flat. No problem. I pumped it up and started riding, thinking it would flatten out over time, but I noticed that after only 10 minutes it went soft again. I found the leak and checked the rim and tire for sharp objects. Nothing found. I've replaced the tube twice more and the tire has deflated each time. I found holes in each tube, at different locations on the tubes. 4th tube seems fine. I tested it in a water bath before mounting it on the bike. The 5th tube works well on my road bike. 3 bad pipes out of 5. Completely unacceptable!