get these latex tubes, they are great...this is all I ride on is latex tubes and they give a given tyre better feel..more suppleness, a better "zing" resonance when the rubber meets the road.100 psi on latex is like 75 psi on buytl ..bicycle science says you save so many watts on latex as well. these require some savvy bicycle mechanical skills: Not get the tube between the rim and tyre then inflate, lots of people including myself have done this - BAM oops..try again..slightly inflate the tube and make sure the tube is inside the tyre by squeezing the tyre(rim valley deepest), start and stop at the valve stem. I also use a special leverage tool to pull the last remaining bit of tire into the rim without using tyre levers -again check before inflating that all the tube is in the tyre...

Run these for cyclocross racing and they are a must have in my book! No pinch flat ever with these, and I have taken some pretty sharp hits with them! These are a game changer.

By far the worst tube I have ever used. I switched out my standard rubber tubes this past week in preparation to do Levis Gran Fondo as I wanted a slightly more supple ride-feel-traction for the descents......the rear tube lasted about 4-5 miles of my first ride with them, and the front tube blew out at the bottom of the Hauser Bridge descent in the Gran Fondo (that was a lot of fun trying not to crash and stop going down a 13-15% grade with severe brake fade and a flat front tire, BTW). At least the front tube almost lasted 3 rides.