MEETLOCKS Bike Tube Thorn Resistant 26x1.75-2.125 or 700x35/38/45C for Choice,Recycle Butyl Solid Brass Stem Valve Presta,Length 60mm 2pcs Pack

These were recommended to me by a friend of mine. I was a bit skeptical that they'd be worth the price, although it's not quite the sticker shock as it seems at first, since you get two tubes to a box. At that, I figured I'd give it a try, since my front tube had a perpetual slow leak and had to be filled every few days. I figured these would give me a replacement for that and a spare to keep in my saddlebags.Well, let me tell you, once you take it out of the box, you can tell the difference. They're heavily constructed, the stem is high quality and the valve moves easily, and it's pretty clear these would stand up to some abuse.They are, due to the heavier construction, a little more challenging to fit into the tire and wheel, but I was able to get it in just fine and without pinching. My bike sees a lot of miles, and I'm awfully sick of changing a front tube every few months due to a slow leak and having to constantly check and pump the tires. Thus far, I've gone a couple weeks without needing to add any air, which I've not seen happen before. I'm quite impressed.Of course, heavier duty construction does mean, well, heavier. I use my bike primarily for commuting and hauling stuff, so a little extra weight from the tube isn't a concern, and for reliability, I'll happily make that trade. If you're someone who's trying to shave every ounce possible, these may not be right for you. But if you want a tube that will do the one job a tube is meant to do, hold air, these are the way to go.

I'm tired of the many many substandard bicycle inner tubes out there. The ones that came with my brand new bike both leaked to low pressure after only a week. Many others I've had before suffered from frequent flats or valve stems that released air until you fidget with them. I replaced the ones in my new bike with a pair of these and they felt hard and full of air even after a couple months. No problems riding on long rides either.Update: Both my front and back tubes now leak slowly, so after a couple weeks or so I need to refill even if I haven't been riding. Otherwise holds up fine, but my high hopes have been dashed. Dropping to 4 stars.Update 2: completely flat every 1-2 weeks. Dropping to 2 stars. No better than the ones I replaced, except for the first 3-4 months. Nearly a waste of time to replace them at all.

This is the third flat I have received from meetlocks in a week. First I thought it was my fault. The first time I chalked it up to my error. The second time I checked the rim, my install, and my psi. Then I ran over a thorn, I guess, but there went another meetlock. So I bought a thorn resistant tube....and no kidding... I didn't even make it across the street before this thorn resistant tube blew out. After I took it apart I noticed that the the area where the presta valve attaches to the tube came apart. I mean REALLY...come on!?I don't know what the deal is...but there is only so much I can take and that last meetlock blowout was it. I have been riding for 25 years and never had this many issues with any tubes. Sorry, but I will not buy these again.Only 2 stars because , from a marketing perspective, the packaging and logo is nice.

The valve threads do not allow you to use an adapter to use a regular (Schrader style) pump. The tube seems a little larger than a 700c rim. After adding air it seemed to fit better, so mine is stuffed in, and we will see if it is crimped (soon probably). It is heavy duty and heavy, and the valve is long (~3in.) which is good for those with long (wide?) road rims, but seems excessive for a standard rim. Shipping was fast and if you have the right pump for the presta valve, it might be okay. All my other presto valve tubes were able to use a little inexpensive adapter.

Ride my bike all the time, flats all the time with OEM tubes. My bike is a Giant brand. This tubes are worth the extra cost. Not one flat since using them .

Longest stem I have ever encountered on a bike tire. Perhaps there is some exotic deep-v rim that would require such a stem, but in my many years of cycling I have never come across such a wheel. On the plus side, the rubber is nice and thick and the two tubes I received did not appear to have any defects.

Very heavy duty. Removable stem core as indicated. I would recommend if your looking for a heavy duty tube for tires in the range specified. I have them on a Continental 700x37 that measures 700x32 when mounted. I was just able to get these in. The thinker rubber of the tube helped them to hold their shape and their was no fear of pinching them.

Great thick and thorn resistant but no slime to prevent flats. Harder to install than regular tubes.

Solid. Good price. I'm not a great cyclist, I get lots of pinch punctures and have a 25kg ebike and commute into work along pot holed roads. It is still intact after a couple of months or so. You're probably a more capable cyclist that me, riding a lighter bike. I haven't bothered slime-ing them, they are just good at what they do.

As described and delivered on time

Only just got these, but so far so good. The quality seems great, especially around the valve.If you don't care about weight, use these.

I think 1 star is to many.