It's hand made in London by the people at Present & Correct - do you know P&C? purveyors of new and vintage stationery which appeals to my inner stationery geek.
I wasn't sure if all the little bits and bobs such as cartridges and a tube of 0.8mm leads would stay in, but it's a very clever design - an envelope with a simple stud closure that keeps everything safe.
|envelope closure with small silver stud|
|all pens, pencils, cartridges stay put|
|homework tips / exams cheats embossed on the top for future reference|