What is the size difference between the Imago, ID, Ego, and Super Ego?
From smallest to largest: The Imago, ID, Ego, and Super Ego. The Super Ego is a big bag capable of carrying a lot of gear. Tom designed it to be able to fit the largest size of Brain Cell (Size 2XL, which is designed for 17″ PC laptops). If you like the Super Ego but think it might be too big for you, check out the Ego. It’s a smaller version of the Super Ego.