inputs.text: comfortable - sit computer 612 hours day woman slightly 5 tall every chair world high feet rarely touch floor doctor chiropractor tell feet cant comfortably reach floor thighs parallel floor back take strain trying compensate bought portable footrest im house needed something larger comfortable hours sit desk foot pad large enough feet still rest even change positions adjustable height updown rotates angle slant get right negative written directions come not clear complete adjust figured slant couldnt find height adjustment even though instructions said adjustable finally turned inspected carefully find adjustment area reread directions experiment figure use fairly mechanical minded know many people would not able figure gave 5 stars product great would encourage manufacturer rewrite instruction page well worth price costs less cost trip chiropractor