HALOViE Back Wedge Cushion 18.5/9.8/15.7 Inches Sofa Bed Office Chair Rest Cushion Back Support Throw Pillow (Gray) WEDGE SHAPE DESIGN - Back wedge cushion helps restore the spine's natural 'S' shaped curve and promote correct sitting posture. CARE FOR BACK HEALTH- HALOViE back support pillow protects lower spinal discs from stressful compression, alleviating lower back pain. COMFORTABLE & HIGH QUALITY - Super soft High quality polyester fiber for support and comfort. Great for back support in bed, in office chair, in sofa etc. Ideal gift for yourself, friends or families. REMOVABLE & WASHABLE - Cover is easy to removable, the zippered cover is made with a cotton linen blended fabric. Machine washable. EXTRA SIDE POCKET - There is a small pocket on the side of the back wedge pillow , which you can place your phone/TV remote control/keys/pen ect.