These boxes are made to contain standard business cards (5,1 x 8,5 cm). They have thin walls (1mm), with a Voronoi like structure. The first one is 3,5cm deep, the second one 8,5cm deep. You can choose between two models of hinges : a standard, bulky and solid one, and a small and discrete magnetic one. They are light and pretty fragile, therefore are not intended for carrying your cards on travels. I have added a part to be used as a separator for the different kinds of cards. -- updated -- V2 : a bigger box was added, along with new magnetic hinges (much more discrete). V3 : 8 separators were added