The Roof Box Company
Thule Atlantis 780 (480 litres), KAMEI Husky (330 litres), Kar Rite Odyssey 320.  In each case the roof box is the full size of its carton
KAMEI have a reputation for being conservative about capacity, Thule and Karrite swing the other way. Look at these pictures that show (L to R) a Thule Atlantis 780 (480 litres), a KAMEI Husky (330 litres), a Kar Rite Odyssey 320. In each case the roof box is the full size of its carton. Seeing is believing.