The Mag-Tank takes a new twist on top tube bags. Instead of a zippered opening, access to the bag is by contoured top flap held in place by a magnetic buckle with mechanical engagement. It will not unintentionally open and spill your gear. 
- One-hand access while riding
 - Side panels stiffened with HDPE plastic sheets
 - Wrap around panel design is padded with closed-cell foam
 - Adjustable height daisy chain front attachment with a foam spacer block
 - Length: 8.5"
 - Max height: 4.5"
 - Width at stem 4.5" tapering down to 1.5"
 
Please note - while the cover to this bag is designed to shed rain and spray, due to the large panel opening the  Revelate Design Mag Tank 2000 is not a sealed bag or waterproof.