BrownMed Imak Back Cushion with ergoPressue Technology and Magnet Therapy Unique air pocket design helps stimulate blood circulation and invigorate back muscles Air pockets allow air to circulate to keep back cool and comfortable Perfect for improving the ergonomic comfort of any office chair Universally designed to fit nearly every car seat Note: Medical Braces and supports are not returnable once removed from sealed packaging. May ship in clinical non-retail packaging