The Genuine BMW Roller Sun ScreenTriangular Window Left is a triangular-shaped sun shade designed specifically for the left side window of a BMW vehicle. It is made with high-quality materials and is an authentic BMW product. The sun screen is designed to easily roll up and down, allowing for quick and convenient use. It helps to block out sunlight and reduce glare, providing a more comfortable driving experience. The product number for this sun screen is 51357281123.