Bontrager's RL is a super tire for fast training, commuting, and centuries. It features a durable, dual-compound tread for excellent traction in a variety of conditions. The risk of flatting is dramatically reduced with the bead-to-bead construction that reduces sidewall cuts, the anti-pinch ribs that reduce pinch flats, and the kevlar belt that resists punctures. In addition to all that toughness, the round profile grips like glue in corners and the lightweight, high-density casing offers a supple ride you'll love.