Doctor Ouch Posture Wedge should be used by individuals that do a fair amount of sitting whether it is at home, at work, or while driving. The posture wedge does not allow any "sacral sitting" or collapsing into a slouched position. It assists in keeping the pelvis correctly positioned up onto the "sit-bones". The Doctor Ouch posture wedge is typically used in conjunction with the Doctor Ouch lumbar roll.