The BOB Revolution Duallie, makes running miles--or just errands--a breeze, courtesy of its swivel 12-inch front wheel. It can be locked straight for running and off-road use or unlocked for easy maneuverability. Each seat reclines independently, and the sun canopies adjust separately as well. BOB's Duallie Infant Car Seat Adapter, $79, allows an infant or two to ride safely. Newborn to 100 pounds (combined weight).