The NordicTrack Commercial S15i Studio Cycle SMR Magnetic Resistance Cover OEM is a replacement cover designed for use with the S15i model of commercial exercise bikes. Made of plastic and in a sleek gray color, this cover is suitable for both home and commercial use. With a weight of 3.1 oz, it is durable and specifically designed for gym and training activities, providing a high-quality magnetic resistance experience for users looking to enhance their fitness routine.