‘Unexposed’, the newest edition to the Field Notes COLORS lineup, is…well, a mystery. And that’s by design. Every pack contains three randomly-selected-but-unique 5.5″ x 3.5″ memo books in an opaque black sleeve, each with 48 pages of reticle graph paper.

As for the covers? No one knows yet. All we know is there are six of them, meaning there are twenty possible combinations you could receive. If you want to collect all six covers, your best bet is to buy 16 packs, and even then it’s not a guarantee. (Thanks to Andrew Kirk for doing the math.)

You’ll have to watch their promo video to get the full story here. Just don’t crank it up at work.