SW-Motech PRO Seat Ring Bicycle The inner sleeve pocket is

The inner sleeve pocket is compatible with a hydration reservoir and/or a back protector

especially on an RT

need a little extra room to take dinner back to camp

Fits BMW Oil Filters:

Removable waist strap is also included for extra pack stability at high speeds

SW-Motech PRO Seat Ring Bicycle The inner sleeve pocket isPRO Seat ring You can attach a PRO tank bag to your seat using the PRO seat ringand thus enjoy the advantages of the magnet assisted mounting system. This is especially useful if you can't attach a tank ringto the front of the tank. The PRO tank ring sits on a fiberglass reinforced plastic plate that is thenbonded with a rubber base for improved hold. Lashing straps securethe plate to the seat. You can attach the four flat bottomed PRO tank bag