Achieving good posture takes practice. When sitting - especially for long periods, it's important that your lower back has adequate support to reduce the risk of strain and back pain. The Posturite Coccyx Cut-out Wedge can be added to your office chair or car seat to improve the alignment of your body and reduce aches and pains without placing pressure on your coccyx. It positions your hips higher than your knees so that strain and muscle fatigue is relieved from the lower back and legs.This back support guarantees maximum comfort for an injured or bruised coccyx. The soft, plush velour cover can be removed and washed for easy up-keep.