Christopher E.wrote a review of Continental Race Light Tube on September 4, 2017
Familiarity: I've used it once or twice and have initial impressions
I haven't had a flat tire on my road bike in the past 1000 miles or so, but I thought to myself, I'd better buy a couple of tubes just in case. What do you know! Two days after I got these in from Backcountry I caught a flat 9 miles into a ride. Good thing I bought two of these Continental Race Light Tubes! Right? Nope! I replaced my flat with and brand new Continental tube, that immediately went flat! Okay, maybe it was just user error. Maybe I pinched it flat when popping the bead back on the rim. On to tube number two! Pop it in the tire, air it up, and ride 46 mores miles with no problems...until the very next morning when I'm greeted by another flat. That's two Continental Race Light Tubes in 24 hours, and 46 miles.
These things are absolute trash! You'd be better off untying balloon animals and stuffing those in your wheels than using these.
I am riding in Arizona and the roads do come with a bit a debris from time to time, but two tubes in 24 hours!?!? I won't be buying Conti's again. Ever.