Sit-EZ Memory Foam Coccyx Seat Cushion Orthopedic Comfort Chair Cushion w/ Gray Cover Sit-EZ Memory Foam Coccyx Seat Cushion molds to your body shape for the specific support you need. It also responds to your body temperature for extra comfort. It reduces pressure on the lower back and legs as it conforms to the curves and angles of your body and evenly redistributes your weight. The angled wedge shape naturally aligns the spine. The graduated edge positions the hips for better posture. Use it in the office, at home and in the car. Removable gray zippered cover is machine-washable polyester. Great for use in office chairs, car seats, airline seats, wheel chairs, anywhere you sit for lengthy periods of time Cutaway tailbone section helps to relieve backbone pressure Soft breathable removeable cover allows for all day comfort as well as ease of cleaning High-density memory allows for better support and a more even distribution of your body weight, reducing uncomfortable pressure points on the pelvic bones Anatomic shape contours to fit the curves of your lower body for a comfortable seat anywhere you go We ship to the lower 48 states only and we do not combine shipping and we do not ship to APO's. This item ships in 1 to 4 Business days and ships Standard 1-5 business days.