The Arkel Seat Bag! It goes where no other seat bag has gone before with absolutely unprecedented and outstanding features. It is made of a four panel shell that is permanently attached with reinforced Velcro under the seat. A 100% waterproof roll-top Thermo-Guard Nylon pouch slides in and out of the shell in a jiffy. No zippers to operate. In addition to protecting the content, the shell compresses and stabilizes the pouch so that the whole bag attachment to the saddle is rock-solid. Let the downhillers put it to the test! The pouch takes 1 ¾ second to remove.