文具工房 SHELTER, a craft studio located in Seoul, South Korea, creates unique stationery items like pen cases, notebook covers, and diaries. They achieve this by blending traditional leathercraft techniques—utilizing linen thread and vegetable-tanned leather—with modern design and practical ideas.

1) Pen Cases
Shelter's pen cases are a flagship offering, designed to provide both perfect protection and effortless usability.
- PenShelter : This versatile line transforms into a pen tray mode, giving you quick access to your writing instruments.
- PenSuit : For those who prefer a minimalist approach, the PenSuit is slim and compact.
- PenMuseum: Ideal for holding multiple pens, the PenMuseum enhances usability with its standing mode.

2) Pen Trays
- Papyrus Wave : This distinctive pen tray is designed to be carried flat, then ingeniously folds into a three-dimensional tray when needed.

3) Notebook Covers
- NoteShelter: Featuring a molding technique that minimizes interference while writing and a unique clipboard mode for a distinct user experience, this lineup is inspired by French art binding.

4) Diaries
- DayShelter: A high-end diary binder that perfectly balances portability with comfort during writing.
- Diary Refills: Complementing the DayShelter, these diary refills offer an exceptionally smooth writing experience.

5) Inks
- Original Theme Inks: a total of 6 types of fountain pen inks.