waist support seat cushions, making long sitting comfortable; office backrest cushions, waist-support chair for sitting posture correction, ergonomic chairs for students and children 护腰坐垫久坐不累办公室靠垫护腰坐姿椅学生儿童矫正垫人体工学椅

gray black ankela red emerald blue rose red pale pink triangle gray triangular black elegant purple elegant gray olive black gray [includes a waist pillow + fixed strap] black [includes a waist pillow + a fixed strap] gray wings purple wings

small size: 32*29*29cm large size: 36*30*32cm 42*32*30cm 42*38*44cm 47*33*37cm