Each side operates independently to provide easy movement through narrow spaces and greater stability when standing up, while the front cross braces are located near top of walker to allow full stride. Sturdy 1" aluminum tubing is lightweight and folds to a slim 4 1/2" for easy transportation and storage. Contoured textured latex free PVC handgrips provide additional patient comfort. Width inside hand grips: 18"; width inside base legs: 21"; depth opened at base: 16". 300-lb. weight capacity. Limited lifetime warranty on frame. Six month warranty on handgrips, push buttons, feet, wheels, glide caps, and any other "wearable" parts. Adult Walker w/5" Wheels, Height Adjustable 32.5"-39.5"