Perfect for those that occasionally need a little extra carrying capacity than a seat bag, Topeak's DynaPack has a sleek, aero profile and quickly attaches to your seatpost. It easily holds tools and tubes with enough room to spare for a jacket or a small picnic lunch.
Capacity: 244 cubic inches
Dimensions: 15.3 x 6.7 x 7.1 inches
Weight: 1.1 pounds