BOB - BOB Ironman Duallie - Yellow Whether you re a track trainer, regular jogger or somewhere in between, the Ironman@ Duallie@ is built to go as fast and far as your running experience moves you. The fixed front wheel, 16 high pressure, low profile tires roll effortlessly on hard surfaces whether jogging leisurely or at training pace speeds. For your babies, it s a smooth ride with a state-of-the-art suspension system, ultra-padded reclining seats and adjustable five-point padded harnesses. The Accessory Adapter feature quickly secures a BOB@ Infant Car Seat Adapter or Snack Tray. The Ironman s easy-fold, lightweight frame packs up quick so you ll never be late for the race.