Projekt Presta Valve Bicycle Inner Tube 700C (ISO 622) or 27" (ISO 630), Multi-Pack, 48mm

My husband is an active cyclist so when he needed new tubes, we went straight to amazon to buy. We found these to be a good price but were hesitant because there were no reviews. I rely heavily on customer reviews to help me decide if it’s worth the purchase or not. My husband said these are all the same thing regardless of reviews as long as it’s the right size. So we ordered them. One tube was ripped upon arrival and the stem sizes weren’t accurate. Shipping was fast but I returned the product due to sizing and one tube being ripped. I gave 2 stars because the item did arrive quickly and the product was correct except for stem sizing. The stem was smaller than advertised as we measured it and even compared it to the tube that needed to be replaced.UPDATE:The company reached out to me and actually sent me out the product again. This time the product was correct so I changed my review from 2 to 5 because customer service was AWESOME! They went above and beyond to make sure we were satisfied. We decided to give their company and product another try and now we are happy we did. Product itself is great quality and it ships quickly (all sizing is correct). Super happy with the company and the product. They truly care about the customer experience!

I've been replacing my bike tires for years, and I've fortunately learned to always pump the tires to at least 20PSI before installing for this very reason. I took a try on switching from Qtires to Projekt but will be switching right back after this experience.Open box + Inspection: Poorly folded tires with ashy, very old looking tires. These tires looked significantly older than the 2yo tire that got a flat that I'm trying to replace (last picture, old tire on right, 4 Projekt tires on left).Tire 1: Pump to 10PSI and see a pinholeTire 2: See a bubble defect, pump to 25PSI and tire blowsTire 3: Presta valve defective even after checking pump on multiple bikes and multiple pumps, tire won't let air in or out, valve looks poorly made and must not be sealed.Tire 4: Presta valve defective even after checking pump on multiple bikes and multiple pumps, tire won't let air in or out, valve looks poorly made and must not be sealed.This is absolutely unacceptable and ridiculous. Never in my years of fixing bikes have I ever had this before. 2 hours of my Sunday wasted.

So I got the 2-pack 700x28-32c tubes and combined them with the Schwalbe Marathon HS Wire Bead Tires listed below.https://www.amazon.com/gp/product/B004JKIUD6/ref=oh_aui_detailpage_o01_s01?ie=UTF8&psc=1My original tubes were Kenda along with my tires and one poppe, so I decided to redo them both. I got the tubes pumped up to 80psi with those Schwalbe Marathon tires and rode my bike from Capitol Hill in Denver 33 miles to Boulder. I lost about 25psi of air after 15-18 miles. This is no fault of the tube as the altitude is over a mile high and breaking in the tires and tubes needed to be done. On around 18-19 miles, I found a bike pump station and then pumped them up to 100psi and was then rolling quickly and efficiently. . They worked really well. So good review on a newly listed product. Hoping this review is helpful for others. Everyone needs bike tubes so go ahead and buy some bike tubes.Ol' John Boy

I have not used a tube yet as seemingly when I have tubes on hand, I don’t flat.I didn’t care for the all 4 in one box without a seaparate wrapping for each. Some may not care about that but tubes end up sticking together when they are not separated. Thankfully that was not a huge issue.The tubes seem fairly thick versus many of the other brands I’ve used. I don’t know if that is a good or bad thing. Stems are the appropriate length.Other than that I cannot give any further feed back until such time as I actually use one.

I have and older bike. I have an inexpensive bike. I ride that bike a lot. So when the clicking in my wheel area wasn't solved by replacing the pedals (always check the pedals first for clicking sound, it is an inexpensive fix), I figured it was time for a new wheel. So I replaced the rear first. Got a freehub wheel instead of freewheel wheel (Tip: the only difference between most $300 bikes and $1000 and above bikes is that the $300 bike has a freewheel hub in back. So replace that with a freehub wheel and you got a $400 bike that is the same as a $1000+ bike). I know the difference on paper is confusing, but save some money and look it up. Anyway, the wheel I was replacing was a Deep V rim, meaning it shaped like a upside down V on the inside instead of an upside down U. This make the rim take up more space on the inner tube stem. So you have to get tubes with a longer stem.When I had the Deep V rims, I bought this good value pack with like 6 tubes in it. They lasted me for thousands on miles of touring, commuting, fun rides, and vacations. The tubes acted like regular tubes, sometimes they got flats. Didn't matter since I had replacements. I have ordered these multiple times. They come with a glow in the dark valve cap, it can be cut to make a Shrader valve pump work with the Prestas on the tube. Has the screw ring to hold the stem in place. Inflate well, don't get sticky from heat when stored in bike bag. They are tubes. Good value.When I got my new freehub wheel, it did not have deep V rims. I tubes still work, but the stem sticks out close to 2 inches. I don't care. If you do, learn the length of stem you need and order correct stem length. I will continue to use these until they are gone (got 2 left), and then I will get the correct length stem. These tubes have been a stable ride partner I could count on to work when I needed to fix and flat. Some cheap tubes are not like that. Side seams that aren't sealed, or holes at the stem can be the normal. Not these tubes, at least not 3 years ago when I ordered my last batch.Good value, good product. Will buy again if possible in future