Maxxis holy roller mtb tyrethe maxxis holy roller is the most versatile mtb tire features a tightly spaced knob pattern a unique design that rolls extremely well on pavement and still hooks up in hardpack conditions hooks up in medium density soil and trails via a deep cut center groove for straight line control featuresfoldable bead foldable beads also keep the tire secured to the rim but are lighter weight and easily transported the bead is made of spun aramid or kevlar fibers m126inv