Lightweght, ergonomic folding mechanism is easy to reach from sitting position. Comfortably shaped paddles "pop up" when walker is opened. Nylon paddles resist cracking or shattering. Patented anti-rattle silencers provide quieter operation. Folds easily to 4" deep for transport or storage. Distance between legs measured at floor level is 21.5". Weight capacity: 300 lbs. Lifetime limited warranty. Heavy Duty model available (INV6291HDA) holds up to 400 lbs.