Two-button folding mechanism offers quick, convenient operation./ Folding mechanism can be operated with one hand/ Aluminum; no wheels/ G30760P: 300-lb. (136 kg) Weight capacity; Approximate user height, 5'5"-6'4" (165 cm-193 cm); Width inside hand grip, 17.25" (44 cm); Height adjustment, 32"-39" (80 cm-98 cm); Folded width, 4.5" (11 cm)/ MDS86615: 250-lb. (113 kg) Weight capacity; Approximate user height, 5'-6' (152 cm-183 cm); Width inside hand grip, 18" (46 cm); Height adjustment, 32"-36" (81 cm-91cm); Folded width, 4.5" (11 cm).