Talis Plus offers not only easily accessible 8 liters of interior storage on your rack, but an additional 7 liter for flexible use, by fold-out side pockets and upper extension Numerous zippered pockets, mesh pockets, reflector stripes and an included rain cover provide safety and keep your things organized Pre-mounted Snapit adapter, adjustable for narrow and wide platforms Large open interior with multiple mesh and zippered pockets for organized storage Carry handle and adjustable/removable shoulder strap allow easy off-the-bike transportation Reflective stripe accents provide additional visibility Compatible with Racktime SnapIt equipped racks only Dimensions without expansion: 14.6 x 5.9 x 10.6 Dimensions with pannier expansion: 14.6 x 10 x 10.6 Cubic inches without expansion: 488 Cubic inches with expansion: 915 SnapIt 14.6x5.9x10.6` 915 c.i. Black/Grey XXX-Large (700+ c.i.)