These lightweight 4 wheel rollators fold-up, are available in an array of sizes, weight capacities, colors, styles, and take only 3-5 business days for free UPS delivery. Variations in seat style, basket placement, and back support type are what differs between the competing models. Seat heights and overall width should also be considered when purchasing a rollator. Measure doorways and make sure you can maneuver your rollator through your home if that is where you'll be using it. Bathroom doors and hallways in the home are usually the most narrow passages. Once you leave the house you'll find most doorways have plenty clearance.