An update of the Pathfinder 4, the PX4 has many of the same winning features, plus several updates. Like the Pathfinder 4, the PX4 folds/unfolds in two easy steps and has built-in storage. The new single-piece handle allows the cart to be pushed with one hand and the updated console tray has dual-umbrella attachments. The two front wheels extend to accommodate larger bags (a 5mm Allen wrench can make this adjustment). This cart includes a drink holder.