A floor seat providing a pair of sitting-bone supports, a pelvic-floor support extending between the sitting-bone supports at substantially the same level, a coccyx indent behind the pelvic-floor support, a heel indent in front of the pelvic-floor support, and a forward incline, which provide positioning, cushioning, insulation, and the proper amount of supporting pressure or absence of pressure appropriate to the sitting bones, the pelvic floor, and the coccyx, and room for proper placement of the feet, for persons sitting on a floor, particularly though not exclusively in the practice of yoga, and optionally a pubic-bone positioner to aid in positioning and posture, and thigh supports.