Continental Race 28 700x20-25c Bicycle Inner Tubes - 42mm Long PrestaValve - 4 Pack w/ Decal

I've used Continental branded tubes and tires for several years and have never experienced a problem with them. Great durability at a decent price.

Contitubes have been my go-to for a long time. I spent a few years living in southern Italy where to roads are brutal on a bike. I found these tubes then and found they are much more durable and with much higher quality control than cheaper tubes. I haven't bought any other brand in years because these are just that good.

I have been using Continental Race 28 Gatorskins on my bikes for the past 4 years. The quality is excellent, and I get about 2,000+ miles out of a set. The price was very good.

These get holes and leak, but so do all bike tires. These were a decent price.

I like the style of the valve. It is threaded, so the pump head holds better than it does on a smooth valve. A nut is supplied, and this nut takes the strain off of the tube when the pump head is being pushed into place. Since the core is removable, it is possible to add a sealant to the tube ... Stan's, for example. That having been said, my experience suggests that Stan's does not always seal at such high pressures (110 psi). I quit adding sealant, but I still like the tube.

Valve failed closed after several uses. Tried a second one and it did the same thing. Couldn't inflate, deflate, or measure pressure on two tubes. Had to destroy valves to remove them. Cut them open and found that the tiny o-ring like gasket is not properly fastened to the valve stem. It comes loose from the valve stem and jams in the seat keeping it from venting. I've used several tens of 700 x 23c tubes and repaired and replaced them many times and never encountered similar behavior. This is a potentially big problem on a long trip if you get a flat and expect the new spare in your kit to save you. You'll have severe difficulty inflating with a hand pump and won't be able to measure the pressure.

Continental tubes are the best. I have used them for as long as I remember. Not the cheapest but no flats either which is worth the money.

Exactly as described and traditional Conti quality. I did not receive the decal but that was / is of no importance to me.