Great tubes, the stems are solid, hold air well. I like the removable core as I prefer to add my own sealant. I use about 1/2 of what the pre-slimed tubes come with, and I prefer to put Stans in the tubes.
I ride a hardtail so pinch-flats in my rear tube happen all the time. I bought new tires, rims, and these tubes and in the past month I have had zero flats. I can't say that the lack of flats is directly attributable to the tubes but I'll give them a little credit.
PROS: Lightweight, Good Stem Length, Puncture Resistant, Easy To Regulate
Bought as back up for patched tubes- yes I said that correctly. Patched tubes holding up well, one of two Qtubes is also. 1st Qtube was outfitted with a self removing presta valve. Found out the hard way at the worst time. Check your 6. Remaining Qtube is working admirably as intended. Fred "Bad Luck" Schleprock
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Continental 26" Free Ride Presta Valve Tube Epic
riding calls for high quality tubes. Continental puts their tubes through stringent quality control, giving you the best tubes your bike deserves to roll on. With great puncture resistance and added reinforcement, ...