The Arkel Waterproof Seat Bag! It goes where no other bike saddle 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 just a second to remove. Carrying bike tools, a spare tube, a cell phone? They'll stay dry in the worst deluge of rain or mud…! Carrying a wallet and other essentials? Pull the pouch out and bring it safely along with you, it will be clean and you can carry it with the neat “roll-top” integrated handle. No more bending down and searching for your small change with your finger tips inside a small cavernous bag under the seat! Life is beautiful on a bike, enjoy it!