notebook case

A case for a notebook and pen. 
The translucent effect is achieved by thin (1mm walls) and white PLA.

Fits notebooks up to 72x144mm, but can be resized.
It was specifically designed for The drop around map paper:

https://store.droparound.com/?pid=17212747   Japan

https://www.presentandcorrect.com/products/map-paper?_psq=map&_v=1.0   UK
Fits pens with a diameter (including clip) below 14mm.