“While the Super Ego is the maximum capacity one would want a messenger bag to be, the Imago is probably the minimum. The ID Bag hits the sweet spot in the middle. Fully loaded is was as cozy as any carry-on or personal bag would want to be. The renowned suspension shoulder strap absorbs pressure that would otherwise be transferred to the user’s shoulders, making long hikes or hurried dashes less strenuous than with plain unpadded straps.”
Read the full review. The full review on the Imago Metrics Web site has detailed pictures of the features on the ID, and pictures of what would fit inside the ID.