WTB Cross Boss TCS Light Fast Rolling 700x35 Tubeless TireVolume 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