DMLNN 700x23C Road Bike Replacement Inner Tubes Schrader Valve for Road Bikes with Tire Size of 700c x 20, 23, and 25 (4 Inner Tubes with 4 Tire Levers)

After a whole lot of frustration seeing the tube go flat immediately when it was pumped up, checking the tire and rim carefully for foreign objects, patching the tube, and repeating, I eventually put the tube in a brand new tire on a completely different bike and it still blew when I pumped it up. Seeing my patches in a straight line along a seam and the new hole lining up with them, I realized I was dealing with a defective tube.Tubes are annoyingly expensive right now, but do yourself a favor and don’t cheap out. I could have saved myself hours of frustration.

One of the tubes became uneven after filled up with air, and bumps when I rode it.I had to replace it after just one usage.Cheaply made.Never buy it again, You do get what you pay for it

These tubes look high quality, and the kit came with everything you need to install them. Buy them with confidence!

Two of the four tubes had punctures along the inside seam. One failed within 12 hours of installation before I had a chance to ride it. The other was punctured after a short ride, I patched it, and then had a different puncture along the same seam after a 2 mile ride. Would not recommend unless you like walking your bike home.

I ended up throwing them away and buying tubes from my local bicycle shop.