SAFETY HANDLE: Provides balance and support for sitting and standing. TRAY TABLE: 16? x 18? bamboo table adjusts in height from 26?-32?. SWIVEL TRAY: Multi-use tray pivots and rotates 360°. ADJUSTABLE: Handle adjusts in height from 34?-40?; Base from 20?-36?. RUBBER PADS: Ensures stability & protects your floor from markings.