The Genuine BMW Cover Window Guide Web Exterior Left (Gloss Black) - 51357263381 is a high-quality exterior cover designed specifically for the left side window of BMW vehicles. It is made from durable materials and has a glossy black finish, giving it a sleek and stylish appearance. The cover is designed to fit perfectly onto the window guide web, providing protection and enhancing the overall look of the vehicle. This product is an official BMW accessory and is guaranteed to be of the highest quality. It is a must-have for any BMW owner looking to add a touch of elegance to their vehicle.