Continental explorer mtb tyre exceptionally successful intermediate cross country tyre its spikey endless edge tread design hooks up on loose surfaces at all angles of lean and the sharp lugs clear mud efficiently for when the sky opens and the trails get rainswept for the racers of tomorrow the explorer is available in smaller sizes for childrens bikes specifications etrtosizeweightbeadtechnologypsi rec inflationpsi max inflationplytpi40 406 20x1 75 560g wire sport 50 65 384 47 5