This ergonomic posture support cushion provides firm yet plush support to reduce discomfort in the head, neck, shoulders, and back by promoting ideal spinal alignment. Great for use at home, in the office, or even on the road in the car. Plus, it also works well when placed behind the knees and ankles. The cushion comes compressed in a unique compact package and expands to full size when opened. The cushion cover is also removable and machine-washable for easy care, while a handy elastic strap keeps the cushion securely in place.