ZOL Road Bicycle Bike Inner Tube 700x23/25C Presta/French Valve 60mm

I ride 10 miles a day each way to and from work, riding the length of Philadelphia from North to South, through lots of broken glass and potholes and crushed iced tea boxes and every manor of litter and I was worried about how these would hold up seeing as they were the cheapest option I could find in bulk on Amazon. And I'm really happy so far with how well they've held up! I feel like flats kind of happen in clusters and sometimes you can get by with one lasting a weirdly long time before getting like 3 in a week, so maybe I'm in one of those weird oases or something where you're just riding on luck or statistics or something, but so far I've had to use 2 of these boys in like 3 months! I'm also not really the best at keeping my pressure high so I tend to get a fair number of pinch-flats and so far both of the punctures I've gotten were from broken glass and would have punctured literally any inner tube on the market.I should also say I ride with one gatorskin tire and one armadillo tire, I'm trying to see which wears the longest, so I only have an experience with these tubes in pretty puncture resistant tires. I dont road race or tour or anything, I'm just a city rider. For all I know these are slow or heavy or non-conforming or whatever, I just know they last and I'm happy.

Pros: I like the long stem. I like the low cost.Cons: I have had a lot of unexplained flats on these, but occasionally I get a really long lasting tube.Background:So I rode 14 months on one innertube on my back tire. The tire had to be replaced, so I reused the tube in the new tire. It went flat after about 10 miles. I checked the inside of the tire visually and with my fingers, and could not find any thorns or sharp objects. I put a new tube in and a week later I had another flat. This time I did find a thorn so that accounted for it. I removed the thorn and verified. Since then I have had 3 more flats, but no more thorns.Some of the new tubes seem to leak a little around the base of the stem, but once under pressure they seem solid. I am not sure what to think at this point. I have 3 tubes on order, and if I keep getting unexplained flats I will switch to something else.

These tubes are not intended for racing - they are much heavier than typical 23 racing tubes, but consequently they hold air pressure much longer. The valve attachment is gusseted with some additional material (looks like a liquid patch was applied around the stem) so I expect I won't ever get valve stem ripouts common in cheap tubes. The stem itself is SS and fully threaded (see photo). The tube is even lubricated/slippery i.e not tacky raw butyl as is so common these days, but not at all messy lIke talcum powder. That's a BIG plus for a road spare! Recommended for your training/commuting bike if you don't want to do the daily pump, and for any bike as a spare. Would have given 5 stars but for the weight.

So first things first, I received 9 tubes and 1 empty box. But none of that matters if already multiple tubes have split themselves after 1 ride each using 2 different rear wheels. 1 split just riding on my new training rollers. It's ridiculous. I have never experienced anything like this. Either these are just complete junk, it was a bad batch, or a disgruntled employee getting paid slave wages decided he/she has had enough. I usually don't do this, but until they figure things out, watch out, look somewhere else, and just buy the name brand ones, at least they are guaranteed to last more than one ride unless you actually hit something or get something stuck in the tire.Edit: 4th f'n tube goes out. I am currently sitting in front of a friends house I was talking to and while simply holding my bike, about to leave, guess what we hear? All the air going out of my tire with me just standing there. Garbage.

This tube is great I have already done 200 miles with it and the touch of it I can definitely say it is a high quality and the price is worth it.

Bycicle.

My commute makes me prone to punctured tires, so extra tubes are a must for me. I haven't received a faulty tire yet, and they seem to hold up well to wear and tear (thorns, not so much)

These tubes are awesome. I have not added air for a whole month. They are totally worth buying.

good value for money

rip off that I returned . States as being ten , recurved one !!!......

Il prodotto non mi ha soddisfatto, risulta nella media come qualità della gomma la saldatura risulta abbastanza grossolana e l'attacco della valvola non è fatta molto bene si vedono delle inprecisioni sulla sigillatura, spero che non diano proplemi di tenuta.

Brutal. Got one quick ride out of the first tube. I left my bike in storage for a couple of weeks and came back to find the tire punctured along a seam in the tube. The second tube went in, only to burst while I was inflating for the first time! Didn't even reach 100 psi.

Funcionan como se espera, pero son algo delicadas, aún con un liner terminaron ponchándose rápidamente las dos al mismo tiempo, quizás yo tuve mala suerte.