Versatile is the defining term on any dry and compact terrain. Give it a try on rocks, gravel, sand, and even grass and you won't find it's equal in terms of grip and low rolling resistance. The AKA was conceived to deliver in those situations where the knobs have to penetrate the ground without digging, and offer the ulitmate grip without slowing the wheel down. The side knob design is derived directly from the GATO, providing the same reliable side grip. Bead: Kevlar Folding Tube or Tubeless ready.Weight: 519 grams.