【Fits models】: The cushions are designed according to the colours of the original car seats and are best fit for Porsche accessories. They can also be used on other car seats and are universally usable as long as the size is correct. 【Size】: The cushion measures 17.9" in length, 17.7" in width and 1.18" in thickness.Please check if the size will fit your chair. 【Difference in materials】: The cushions are made from nappa leather and suede respectively. The nappa leather has a natural texture, is flexible and has good breathability. The suede cushions have the advantage of being warm in winter and cool in summer, slow to absorb heat in summer and not cold in winter. 【Exquisite craftsmanship】: The cushions are made of several layers. The top layer is perforated leather, the middle layer is filled with an elastic cotton core and the bottom layer has a non-slip silicone claw-shaped base to prevent it from falling off the seat of your car. 【Function】: Sitting or driving for long periods of time can cause problems such as lower back pain and body aches. This comfortable car seat cushion is ergonomically designed to relieve pain in the sciatic nerve, coccyx and lower back. The three-dimensional pressure of the suspension structure reduces aching and numbness while driving. The soft material relieves pressure on the hips. At the same time, the seat cushion protects your car seat from dust, wear, dents and scratches. A comfortable and supportive cushion for people who sit for long periods of time.