This Box set is all you need if you,re a Batman fan. It has the first 4 Batman films all in one. I think it has been updated as the other Box set had 4 separate Blu-Rays in each case. now theres just to cases with 2 Discs in each one. I suppose it,s to reduce storage problems if you haven,t alot of space, being it,s half the Thickness of the original Box set. A very good Buy, really pleased with my order from Amazon.