OUTSTANDING EFFECTIVENESS - according to a 3rd party clinical study conducted in Arizona USA the orthopedic sitting pillow QiPillow showed improvement of 91% of people suffering from back pain reducing back stiffness pain or fatigue.VERSATILE – this ergonomic & orthopedic lumbar support sit pillow helps reduce stress tension and pain in the back. Moreover your sitting posture and comfort shall be improved by using the light-weight QiPillow orthopedic lumbar back support pillow wherever you sit: at work home in cars and on airplanes.ADJUSTABLE - the QiPillow orthopedic seat cushion is instantly customizable to suit any user’s body seat and comfort and is a perfect ergonomic solution for chair couch & bed sitting (it can also be used as an ergonomic office chair pillow).FIRM YET GENTLE - unlike ordinary orthopedic back support cushions back orthopedic pillows and back orthopedic supports the pain relieving QiPillow orthopedic back comfort & posture support cushion never collapses under body weight and never loses its level of support no matter how firm or soft you set it even after prolonged period of sitting.EASY-TO-USE: Anyone can use adjust and enjoy this firm ergonomic orthopedic sitting pillow. By the way this orthopedic back support pillow for sitting is equipped with a detachable and washable premium microfiber suede cover.