Looking for a way to protect your bike seat while transporting your bike? You've come to the right place. The XeroCover Journey features two layers of waterproof fabric in addition to a durable draw-string, which allows you to cinch down the seat cover to ensure it doesn't come off while traveling. This makes it particularly well suited for protecting your bike seat while transporting your bike on a car rack. Fits bike seats up to 11 inches long by 9 inches wide.