700x38c Bike Tube 700x38c Inner Tube 28" x1-3/8 1-5/8"Road Bike Tube 700x35c 700x36c 700x37c 700x39c 700x40c 700x41c 700x42c 700x43c Bike Tubes 2Pack

Quality is great and fit is perfect. The tubes have held up pretty well in heat too.

It’s tough to find tubes that are large in size, especially 700×38 to 42. The tube is relatively durable and has a Presta vowels which accommodates many wheel configurations. Would absolutely purchase again.

Nice complete kit for both tires

Both tubes were defective and had holes in them in the same areas. Near the valve stem they both were punctured. I installed the first one and it was good for a few minutes and rode on it then it let go. The second tube I installed on the rim with outer tire and it was good. While I was mounting it on the bike it let go. There was nothing on the rim to make the holes at the valve stem area. So I blame the defects on the rubber and not the rim. The tube I replaced was 20 years old and was dry rot and did not have a hole in the area that the new tubes do.

Average thickness inner tube with nicely designed tire levels and fancy valve caps. Minus 1 star for the marketing hype and high than average price possibly due to the extra stuff. The product description claimed: " We use The Highest-Strength PC Plastic Material, Which is 5 Times Harder Than Ordinary Nylon Plastic." while the listed Material is: Butyl Rubber. Maybe marketing hype?Average thickness inner tube which I measured the thickness by squeezing the tube flat. The measured almost 1/8" mean the side wall is under 1/16" thick, not the thinness of tubes tested and holds air well upon first inflated to 75lb on a tire rated 85lb. Pictured 1 is the measured tube. Picture 2 is the 3 tire levels and 2 extra Blue fancy valve caps. I installed this tube on my back wheel to time test the: "5 Times Harder Than Ordinary Nylon Plastic" claim.More marketing hype description?: "It Is More Durable and Costly. Less Than 5 Minutes, You Can Return To The Road After Replacement". Maybe this should be reworded to: It Is More Durable and "Less" Costly (still needs work). And I don't know why one needs to wait "Less Than 5 Minutes, You Can Return To The Road After Replacement (of the inner tube). Maybe time to hire a real copy writer!

The media could not be loaded. You would think we would have it figured out by now with standardized bikes but no…. My tube was flat so I went to get a new one. Turns out the bike I have needs a longer valve that apparently is rare and stores don’t carry…great. The standard is 40mm valve, but they are too short and I can’t blow up the tube while it’s in the tire, which is pointless. I was kinda risking it with this one cuz the listing really didn’t say what size the valve was but I took a chance and it looked right and it fits!!! Fills full of air and stays full so we will see how it does on the road. And for anyone wondering here are my Bike specs:Bike: Genesis Hybrid Terra 700Tire/Tubes: 700 x 28-38c OR 28-38 x 622

I needed tube's for an older Shwinn bike and was having alot of trouble. I did find it at a bicycle shop and they wanted $75.....that's crazy!!!! Finally looked on Amazon and got 2 for a great price

It was the right size, well packaged and came with all the tools needed