Blue Jay Knee Walker Folding Design Folding Polyurethane Foam Seat Cushions And Provides Firm Support One-click Quick Folding Folds In Seconds For Easy Transport And Storage Allowing You To Commute In A Cab Or Bus And Travel By Plane The Front Axle And Center Frame Are Designed To Fold The Knee Walker Into The Most Compact Size Possible Handlebars Height Can Be Adjusted From From 31 - 38 Seat Height Can Be Adjusted From 17 - 20 Suitable For Indoor And Outdoor Use Weight Limit: 300 Lb.