Thanks to the frame design, the wheelchair is steady, whatever the backrest and seat angles are. - 3 frame sizes: 39, 44 and 49 with adjustable seat width of 5 cm each. (from 39 to 54 cm) - Legrest with adjustable calf cushions (width, height, depth). Easily retractable. - Adjustable height backrest (on 9 cm) and two choices of cushion height. - Headrest with multi-positional earcushions - Armrests can be height- adjusted and depth-adjusted. It is also removable. - Lenght of frame adjustable according to the seat depth - Adjustment of width between legrests according to the seat depth Frame in three sizes and, large adaptability for 4 main configurations : IDSoft Standard, IDSoft Prime, IDSoft "Bedsore Prevention" and IDSoft Opti PVC.