Field Notes' Pony Express Leather Pouch is one of those products we've loved for years here at T&T, for a few reasons:

1. It carries up to three Field Notes memo books, or whatever else you can fit in there — say, a single memo book, a small pen or two, and a short ruler for drawing straight lines.
2. It's hand-tooled from thick, premium American leather by the fine folks at Tanner Goods, and it's designed to look like a vintage USPS mail pouch. The leather only gets more supple and beautiful with time, too.
3. It sports beefy stitching and a sturdy snap enclosure to keep everything in place.

What's not to love? Get one for $86 at Field Notes.