Adjustable triangle pillow are adjusted for the upper and lower second gears. This is based on ergonomic design and provides different support for the body's back. It is relieves the pressure on the cervical vertebrae and the waist as much as possible. Care for the neck and shoulders when the headrest is on top Relax the back and waist when the headrest is underneath Great for back support in bed, in office chair, in sofa etc. Removable & Washable. 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.