BOB - BOB Sport Utility Stroller Duallie - Orange With the latest innovative features, the Sport Utility Stroller Duallie@ is perfect for any off-road strolling experience. Knobby tires and high-impact polymer composite wheels maximize traction. A fixed front wheel provides increased stability hiking, jogging or when the trail gets rough. It's durable, yet lightweight, easy-fold frame makes it easier to transport the Sport Utility Stroller Duallie to wherever your adventures start. You ll know babies are having 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.