You already know we’re huge fans of pocket notebooks for keeping track of to-do lists, important reminders and random sketches. There’s been more than one occasion when we’ve accidentally gotten our current notebook wet, dirty, sweaty or cut. That won’t happen with Nanobook 2.0 because it’s basically indestructible. With a grade 5 titanium exterior and stone paper (yes, real stone!), Nanobook 2.0 is weatherproof, mud-proof, grease-proof, sweat-proof, kid-proof and even fire-resistant. It’s also easily refillable, fits in one hand or a pocket and can be written on with everything from pens to keys. Nanobook 2.0 is built for everything.