I've been riding Conti tubes inside the Conti Gator and Grand Prix for years and have been relatively flat free. Yes, we've all picked up the road debris that eviscerates the sidewall and tube, but day in and day out, 100 miles a week, 50 (ish) weeks a year these tubes perform great! Not too heavy, not too thin, easy to mount. Terrific all around performance training tube. I purchase a new set with every set of new tires and pass the still good used tubes off to folks in need.
Perfect backup for my tubeless gravel bike tires! - small and lightweight but durable enough to hold when there may be some slits or cuts in the casing or sidewall. Carry some tyvek paper to back the holes up if they're too big.
I read many reviews before deciding on these tubes; itï¿½s been a while since I bought tubes/tires and I didnï¿½t know if Iï¿½d need tire liners. The reviews from another rider were what convinced me to try these; I did splurge on the second best tires I found here and one of your phone representatives assured me they would deliver more than enough for my needs. No one wants to be stranded with a flat and these tubes looked like an ounce of prevention to a pound of cure!
Decided for comfort reasons to upgrade from 23mm tires to 32mm tires. Tried several local bike stores for tubes meant for wider tires with no luck. The biggest advantage to these is that the 23 mm tubes in 32 mm tires leak air much faster. These can go several days without needing to have air added.