semi rolltop porteurbag, strapped or bungee cord mounting on rack and rear part.
mapsheet, or elastic cord, 3 inner pockets, back and front pocket, side pockets or mesh.
stiffeners to keep it’s shape. D-rings and shoulder strap. quick closure with velcro and additional strap with buckle.
35 x 23 x 17/27 cm (w x d x h) is a size, but really, customers ask and I deliver: give me dimensions you need (rack size?), no problem. they go from smallish to big.