Seems to be just like any other tube I've ever used. Seems to be good quality. Fits just like it should. Holds air and gets the bike on the road. Won't know how well it holds up until I can get some miles on them.

I got my first '10-speed' racing style bicycle in 1972 and bikes have been my primary form of transportation since, including commuting to work, leisure rides and cycling vacations. Needless to say, I have gone through a lot of tires and inner tubes in that time. My wife and I currently have about ten bikes that we ride at least occasionally and another ten vintage bikes 鈥榝or show'. Except in case of emergencies, I stopped repairing inner tubes some time ago, thinking it is not worth the risk of a repeat flat when I am miles from home. I normally buy inner tubes in bulk at perhaps half the price of these from Hycline, but Amazon Vine discourages reviewers from focusing on price since the selling price can vary over time, so I try to focus on quality. These tubes seem to be similar in quality to the others in my stock, some of which are shown in the attached photo. They are heavier and thicker than some but I now prefer tires that are much more puncture resistant, with tubes to match. It gets old repairing flats miles from home, particularly in very cold or very hot weather!

These bike tubes fit easily, installed without incident, and function well. The valves are standard quality and hold their seal well. I've done some long rides now without any flats.

Went to set up my road bike on my indoor trainer. Rear tire wasn't holding air. Swapped the tube with a new one from Hycline. Levers that came with the Hycline tubes worked just fine. Inflated to 90 psi and good to go. Been riding on it for a month now without issues. $20 is a good value for two tubes and a pair of levers.

For any cyclist, these are essential items. Although they are not the lightest in terms of weight, these inner tubes are well-constructed and should serve the average rider effectively. The tubes are indeed on the thicker side, but that is advantageous for me as my last two flats were caused by thorns. Additionally, two disposable quality tire levers are included as a bonus.