Needing two cycle tubes, I bought this one to use and another at twice the price from a bicycle shop to carry as a spare.
3 months later I notice on the web that Kenda is a well-known and well-respected manufacturer and there was no need to worry, I could have been carrying another Kenda as a spare too.
4 months later, this tube was ruined by a blow-out a short distance from the valve, on the underside, definitely not a puncture. Two attempts to patch it failed - is this a new material that does not take rubber-solution?
However, further experience tells me it's not the fault of the tube, my new pump has enabled me to pump it to 5 bar and the cheap wheels on my LandRover bicycle are at fault, failing to provide support in the area near the valve.
So, Kenda and Amazon, I'm sorry to have doubted you and I'll definitely come back to use you again!