Bontragers xr mud team issue 26 tlr mountain bike tyre is a new aggressive tlr tyre mountain bike tyre with an aggressive tread made for deep mud they excel in deep mud conditions and with help from a mud shedding fast rolling design you can go for longer tlr tyres are engineered for use with bontrager tlr sealant for simple set up and outstanding puncture protection the inner strength casing is lightweight sidewall protection which is also supple and strong