Ankle Prompts - prevents legs from scissoring. Seat Harness - supports patients who cannot stand completely on their own. Pelvic Stabilizer - supports and stabilizes the pelvis. Positioning Bar - provides adjustable depth. Vertical handgrips - provides alternate handgrip position. Variable Resistance Tabs - controls the speed of the gait trainer and aligns an asymmetrical gait pattern. One-Directional Rear Wheels - allows only forward mobility. Swivel Wheel Locking Bracket - provides option to lock swivel wheels. Ankle Prompts prevents legs from scissoring. Seat Harness supports patients who cannot stand completely on their own. Pelvic Stabilizer supports and stabilizes the pelvis. Positioning Bar provides adjustable depth. Vertical handgrips provides alternate handgrip position, posterior models only Variable Resistance Tabs controls the speed of the gait trainer and aligns an asymmetrical gait pattern. One-Directional Rear Wheels allows only forward mobility, posterior models only. Swivel Wheel Locking Bracket provides option to lock swivel wheels. Weight Capacity: 400 lbs. Limited Lifetime Warranty on the frame.