The MIK Big Poppa is our biggest rack bag for maximum cargo. It comes with a large main compartment with a seam-sealed liner, making the internal bag waterproof and drop down panniers on each side with expandable top making this the biggest we know of.
RF seam sealed internal liner
MIK Mounting Bracket attached
waterproof zipper on main storage compartment
water bottle/drink holder that will fit multiple size bottles
