Genuine Pure Polaris Snowmobile Switchback Pro-Ride Tank Bag pt# 2878734 Fits Model Year 2012-2015 Switchback Color: Black Material: Strong, durable 1680-denier black ballistic nylon Installation: Bag fits over fuel fill neck and attaches via straps to sled's frame Capacity: Bag dimensions are 6" x 6" x 9", approximately 324 cubic inches