Teravail Sparwood Tire - 27.5 x 2.1 Tubeless Folding Black Light and Supple Fast Compound. Sparwood is a multi-surface bikepacking tire. The casing reduces rolling resistance and weight for maneuverability and stability and the tread pattern has a directional tight-knit center tread that sheds dirt and debris with side knobs for effective cornering traction. Sparwood is ready for riders who navigate forest roads twisty singletrack gravel tracks and paved connecting sections sometimes all in the same ride.