Features: Designed for those who need to sit for long periods of time. The unique gently sloping shape effectively reduces pressure on the coccyx area, while providing gentle support for the lower back and helping to maintain the natural spinal curve. It is designed to enhance sitting comfort, making a difference during long drives or long periods of sedentary work. Designed to stay securely in place on a variety of seating positions, this cushion provides consistent support for personalized comfort in every situation, whether it's a car seat, office chair, wheelchair, or airplane seat. Specifications: Material: foam Color: blue Size: About 15 x 14 x 1.2 to 3 inches / 38 x 35.5 x 3 cm to 7.6 cm Package includes: 2 X wedge car seat cushions Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays