Schwinn Mark III Double Bike Trailer and Jogging Stroller Handy 2-in-1 bike trailer that converts easily to a walking or jogging stroller Lightweight aluminum frame with dual harness system holds 2 kids at once Smooth-rolling, 20-inch rear alloy wheels and 16-inch front wheel for maximum stroller stability Zippered weather shield protects children from wind and rain; outrigger wheel guards 100-pound capacity; measures 52.5 x 20 x 34.5 inches (W x H x D); 5-year warranty