Enjoy total body comfort & support 8 different ways! This 3-piece multi-functional wedge system provides complete back & body support! Arrange the ergonomically designed cushions in multiple configurations to suite your individual support needs. You can even recreate the zero gravity position, placing your body at a 120-degree angle, one of the most relaxed positions for your body. The knee wedge elevates legs & feet. Unique zippered connections allow adjustability. This is not a medical device & is intended only to improve comfort, posture & support.