Simple Setup & Clean Enjoy the ease of vacuum-sealed headboard pillows shipped to your doorstep. Give twin reading pillow 48 hours for full expansion and odor dissipation before use. Tips for Triangular Headboard Pillow 1) To prevent wedge pillow rips, DON T cut package with sharp objects. 2) To avoid zipper issues, press pillow core while zipping the cover. 3) Speed up expansion by gently patting twin headboard pillow. Ergonomic Headboard Pillows Wedge-shaped & button-tufted design of backrest reading pillow create a natural curvature and inclination conforming to your body for scientific rest.