DESC: Schwinn MARK 3 Aluminum Bike Trailer With Stroller Combination from Pacific Cycle(2007) The newly designed 2007 Schwinn SC767 MARK 3 Trailer/Stroller is much like its counterpart "Mark 2" except that it sports a large removable non-swivel 16" spoked front wheel. Built on a 5 inch wider frame which gives the trailer more stability also allows more space for one or two children. Larger 20" rear wheels along with a large 16" front wheel will make using the "Mark 3" a pleasure whether being pulled behind a bike or pushed as a jogging stroller. MARK 3 Aluminum Bike Trailer Features: 20" spoked alloy wheels / pneumatic tires with quick release design for easy storage Outrigger frame stabilizes and protects rear wheel assemblies Quickly converts to a stroller without using tools Removable large 16" front wheel for stroller application Extra wide Aluminum frame design is lightweight, strong and provides extra child space Universal coupler attaches quickly and easily to most bikes Zippered weather shield prov...