Features:100% High Density Memory Foam & Breathable and Washable CoverCar Seat Cushions for Short People - This cushion can be used as a car seat riser, can increase the height of the rear of the car seat by 3.5" , so that the seat flattened to improve driving visionTwo Ways of Use - Our products can be used both as car seat cushion and as car lumbar support pillow. Whether as a lumbar pillow or seat cushion, the 3.5" thickness is perfect for car seatsProfessional Design - According to the study of driving sitting position, this mini lumbar support pillow can fill the gap between the lower back and the seat back when sitting, relieving the lumbar pain caused by long time drivingMini Size - Size approx. 18 x 10 x 3.5 inches (L*W*H). Our seat cus.