Schwinn Mark II Bike Trailer (Red/Grey/Black) Handy 2-in-1 bike trailer that converts easily to a walking stroller Lightweight aluminum frame with dual harness system holds 2 kids at once Smooth-rolling, 20-inch alloy wheels ride easily across uneven terrain Zippered weather shield protects children from wind and rain; outrigger wheel guards 100-pound capacity; measures 35 x 31 x 20 inches (W x H x D) when folded; 5-year warranty