Front wheel can be fixed for jogging and can swivel 360 degrees for strolling * Full suspension system makes the pet trailer much more comfortable for your pets, and allows the jogging stroller to be used for all terrains. * New hand lock brake system on rear wheel, so you can lock the jogging stroller when parked. * Fits in the trunks and storage areas of most vehicles after folded. * Bike hitch/coupler included for connecting trailer with bike (also fits bikes with quick release wheels).