Volume, speed, and consistency. The Cross Boss’ even center tread shelf provides smooth and fast acceleration while more open side knobs help clear muck. A rounded, high volume profile designed ground-up for tubeless usage provides plenty of room to modulate tire pressure while dual compound, Dual DNA rubber and defined cornering channels keep riders grinning for more turns. From single track to the circuit, the Cross Boss is here to bring it. Tightly spaced center knobs minimize rolling resistance Stepped intermediate knobs and widely spaced outer knobs help clear muck Rounded, high-volume profile designed from the ground-up for tubeless usage TCS Light Fast-Rolling: Lightweight casing with TCS aramid bead and Dual Compound DNA rubber (60a center/50a sides)