Review on Continental Bicycle Tubes Race 28 700x20-25 S42 Presta Valve 42mm Bike Tube Super Value Bundle - Pack of 5 Conti Tubes & 2 Conti Tire Levers for Optimal Performance by Matt Abba

When I first started racing, I didn't like it. Every ride was a struggle. I've been cutting tires and grinding rims like it's nobody's business. I almost gave up the hobby. Then one day after punctured his second tire of the day trying to climb a steep hill, another rider recommended Intertubes. This product is life changing. My rim no longer cuts through a tire or wears out with sand from a concrete road. Riding uphill with a ventilated intermediate chamber to avoid tire and rim slippage. It's like they never touch because of the air cushion. Since using this thing my tires are lasting a lot longer. You could say over 1500 miles compared to the old 10-15. I will not switch to tubeless. The only downside is that you need air to use it properly. This was not necessary with tubeless.