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Handmade Japanese fabric 4-slot fountain pen case by BouSi Design. Features a protective fabric pen roll layout with individual slots to protect luxury fountain pens from scratches, styled on a desk for stationery and journaling lovers.

When Green Loves Blue-New 4 slots pen case

Behind the Stitches: Making the Navy Fuji Mountain Pen Case 🏔️✒️

Hi dears!

Have you ever wondered what goes into making a BouSi Design piece?

As a fountain pen lover myself, I’ve always believed that our favorite pens deserve a home that isn't just functional, but also beautiful and full of story. That’s why I recently turned the camera around to give you a peek behind the sewing machine!

In my latest video, I’m taking you along the journey of crafting the Navy Fuji Mountain 4-Slot Pen Case. From organizing the precise fabric panels to stitching the protective, removable insert, you’ll get to see exactly how this elegant Japanese pattern comes together, stitch by stitch.

Watch it

BouSi Collection

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4 slots Pen Case

4 slots Pen Case

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Triple Fountain Pen Pouch

Triple Fountain Pen Pouch

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Single Fountain Pen Sleeve

Single Fountain Pen Sleeve

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Fabric Corner Bookmark

Fabric Corner Bookmark

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Bag & Pouch

Bag & Pouch

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Tote Bag Insert Organizer

Tote Bag Insert Organizer

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Cutlery Pouch & Housewares

Cutlery Pouch & Housewares

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Doll Clothes

Doll Clothes

Bousi, Bousidesign logo, handmade brand

About BouSi

Hello, I'm Alice, the designer and founder of BouSi from  Hong Kong! 

BouSi translates to “Fabric & Time” in Cantonese, a perfect reflection of my passion for creating handmade fabric crafts that spread joy.


 Since 2018, I've poured my heart into crafting adorable pieces that bring smiles. I started my journey on Etsy, where I proudly became a 5-star seller. However, due to unforeseen circumstances, my shop was unexpectedly shut down in early 2024. 


This challenge led me to create my own online shop, where I can continue sharing my love for fabric crafts and unique stickers. I invite you to explore my collection and join me on this exciting journey. If my creations resonate with you or if you want to chat about all things Japan, I would love for you to follow my Instagram.

 Let’s connect and celebrate the joy of creativity together!




Blog Posts

The Art of Precision: Blue Asanoha Update
I used to make this pen case entirely out of the Blue Asanoha fabric. While I love the pattern, it is incredibly challenging to cut! Because the geometric lines are so precise, I can’t just cut the fabric randomly; I have to align everything perfect...
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"Top-down view of two handmade fabric pen cases: one in blue Mt. Fuji print and one in black with gold floral patterns, displayed next to a cream-colored notebook."
4-Slot Pen Case Reimagined: My Story of Recovery and New Stitches
After several months of rest and recovery, I am so incredibly happy to be back at my dining table (yes, that's my work desk, haha). Hearing the hum of my sewing machine again feels like coming home. To celebrate my return, I’m finally releasing a p...
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fabric pen case and bookmark, sewing project that inspired, BouSidesign handmade pen pouch
Fabric Corner Bookmark: My thoughts about making your own fabric bookmark
I know most people think that corner bookmark is a nice project to clean out your scraps of fabric. However I don’t see it this way, of course it’s a good way to use up the scraps but bookmark itself is a cool item to work on.  I love making p...
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fountain pen carrying case, fountain pen case fabric, pen case for fountain pens, fountain pen pocket case, fountain pen case, Japanese fountain pen case
Belated Happy New Year 2026
Happy New Year 2026, everyone ^V^~~~~! I apologize for the belated wishes, but I’m so excited to share that I’m on the mend from my left hand injury. This year, I’m determined to be even more active than last! I’ve got some amazing content lined up,...
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Fountain pen case, pen case, fountain pen, stationary, pen organization, kaweco, lamy, pilot pen, fountain pen ink, Jinhao, Rhodia, parker jotter fountain pen, MUJI Aluminum Fountain Pen, Pen, Montblanc, rickshaw pen case, kaweco fountain pen, Nib, lamy n
What a bad month....my sewing machine broke down, so as my left hand...
How's everyone doing? Can't believe that it's July already! Em....seems that 2025 is not a good year... Few days ago, my sewing machine suddenly broke down. Then few days later, my left hand can't function properly. The doctor said it was mainly bec...
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Cute fountain pen case, 3 fountain pen case, vegan fabric fountain pen case, best fountain pen travel case, fountain pen case cloth, fountain pen case fabric, fountain pen carrying case, best fountain pen case, Japanese fountain pen case
Temporary Goodbye to my friends in USA
As you know from the news, we are all suffering from the crazy trade war.US gov requests a tariff of US$100 on parcels from Hong Kong. According to news, Hongkong Post would reject US-bound surface mail parcels with immediate effect, while parcels t...
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Japan fabric, Japanese golden fish print, handmade shop, small business
March update-How's everyone doing?
Hi~! How's everyone doing?I was not doing great, not as smooth as expected I guess.In the 2025 new year plan, I planned to launch a new 4 slots pen case by Feb but now...it's already mid of March!I am so behind the schedule!!!The good news is, I fina...
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Cute fountain pen case, triple fountain pen case, artist made pen pouch, fabric pen holder, vegan fabric fountain pen case
Happy International Women Day
Happy Women's Day I just read an article about The 26 Different Types of Women in Psychology, Dating, & Literature. I rarely think what kind of women I am. People may think that sewing is a very feminine thing but I never think in this way. Among...
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A sad moment of 2025
As some of you may know I am from Hong Kong.Today, one of a great musician I love passed away, he was born in Hawaii and debut from Hong Kong.His name is Khalil Fong.His songs are always on my play list. When I was working on photo editing at night, ...
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fashion magazine collection, japanese fashion magazines
Huge Declutter: say goodbye to my Japanese Fashion magaznie
As some of you may know, I am living with my family in Hong Kong. It's a 800 feet apartment which is a "nice size" in terms of Hong Kong's living.And yes, space is very limited but that's how we live.Since I am working hard for my handmade shop, I ne...
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BouSi Daily: After a long break, did I forget how to sew?
BouSi Daily: After a long break, did I forget how to sew?Before Lunar New Year, I stopped sewing for a few weeks and worked on super deep clean!And then I had a short break in Lunar New year.To be honest, I do afraid that I will forgot how to sew, ha...
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Handmade fabric fountain pen case, fountain pen case, triple fountain pen case, pen pouch, fabric pen holder
Happy Lunar New Year 2025! Here is the new fabric fountain pen case ^^
[Happy Lunar New Year, I am back to work!]Hi~~~Happy Lunar New Year! In Lunar Calendar, today (3rd Feb, 2025) is the beginning of spring!I wish everyone will have a Happy Snake year.Just pick this Taisho style Purple Cat Print Pen Case to be our 1st ...
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fountain pen case, triple fountain pen case, pen pouch, fabric pen holder
New Triple Pen Case Collection is here!
Hey~~~~! How are you doing?I am happy to announce that the NEW triple fountain pen case collection is now available in BouSi online store! Here is the Blue collection. I always have a special love towards Navy & Blue. The lucky cat fabric was ver...
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BouSidesign Handmade fabric craft, fabric fountain pen case, Japanese vibes drawstring pouch
No Etsy? What platform do I use for my handmade shop.
Hi everyone! Today I would like to share my experience of using ebay & Payhip for my handmade business. Actually, I never thought that I would write a blog post like this. Once I decided to start my handmade business, I opened the Etsy shop as my...
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Small business artist made fountain pen case, Pink rabbit Japanese vibes 3 slots fountain pen pouches
New Pen Cases are coming soon!
Hi~How are you doing, my friends!I have been busy working on making new fountain pen case. Here is one of the new pen case, a super cute rabbit sakura 3 slots pen pouch.And there will be Christmas blind box coming soon.Some special pen cases will be ...
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Free download to do list, happy journal, free layout design, print your own to do list
What to do...To Do List~!
To be very honest, I am a lazy person who has no discipline at all.Feeling lost and lack of energy has been my daily problem since I was a kid.  I would only work on something I really love and interested in : Drawing & playing Guitar.After ...
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Travel with your Fountain Pen: Fuji Mountain 3 slot pen case
As a Japan enthusiastic geek, Fuji mountain will always in my design collection. I really wish to visit Japan this year but it seems so difficult to do so. My mum is suffering from great pain at her back and I have to help out at home.The ultimate dr...
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How do I plan my trip to Japan? 4 major steps of planning my perfect Japan Trip.
Hi everyone~!Welcome to my blog. Today I would like to share my way of planning my Japan with you. And you can download my travel planner for FREE. (link is at the bottom of the post)I have loved Japan since I was a kid. My Dad loves Manga and Japane...
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Thinking about this blog-what will I do here
After studying for awhile, I noticed that this blog doesn't provide tag or content label services. Em...I believe that I will keep on writing blog but here is a copy and paste one.I will rebuild my blog in blogger, some posts are hidden now.And ...
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My etsy shop was shut down
We were doing good in Etsy...and got shut down!
Hello everyone! I am Alice, the founder/designer/making/marketing/shipping of BouSidesign. (Basically, it’s only me working in the small handmade brand but I feel a bit weird of saying I, so let’s say We.)Why are we here at Payhip?We are a small hand...
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BouSi client review, handmade artist review, tailor made fabric fountain pen case

I hope that you will be one of my happy customers.



Alice@BouSi

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