








DeFF 2nd Gen Refill Pen Jacket (Natural Wood Design Collection)
Bestseller that successfully raised over ¥10 million on crowdfunding platforms. It is designed to be the "ultimate shell" for your favorite writing instruments.
Engraving fonts available
1. Montserrat (Click to view more)
2. Great Vibes (Click to view more)
3. Racing Sans One (Click to view more)
4. Big Shoulders Stencil Text (Click to view more)
Pairs well with

DeFF 2nd Gen Refill Pen Jacket (Natural Wood Design Collection)
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Crowdfunded in Japan, raised 2993% over our goal

Japanese Stationery Series - Refill Pen Jacket
We now reveal our 2nd Gen Refill Pen Jacket Natural Wood Edition, compatible with over 1000 kinds of pen leads in the market.
With the high quality combination of natural wood & stainless steel and comfortable counter weight design, it has an outstanding performance on handiness and writing experience.

Update Your Beloved Ball-Pen
There's a mounting clip inside the Refill Pen Jacket, which can hold the pen nib tightly. The design aims to reduce shaking of pen nib and improve smoothness and stability while writing. While changing pen lead, you only need to unscrew the mounting clip from the pen holder, which is pretty easy.
The pen cover is designed to be cylindrical and has a gradient from thick to thin to improve holding comfort. The holding grip and the mounting clip is made of SUS304 stainless steel, and the pen body and the pen cap are made of original wood, overall weight only 32.5g.

Well-balanced counter weight, improved writing comfort
The reason why ball-pens can't be written comfortably is because of the weight balance while holding rather than overall weight, and writing comfort usually comes from the counter weight, which the pen head is slightly heavier than the pen body.

Extreme Craftsmanship with High Quality Material
We strive to ensure that each product we make can be perfectly presented. While designing, they not only look nice but also practical. The pen holder is made of hardened natural wood, which keeps the surface bright and clean and also anti-corrosion; and the pen grip is made of PVD polished SUS304 stainless steel, which makes the pen perfectly weighted and have an overall beauty.
For Multiple Necessities
Ball-pens can be adopted to personal or formal occasions and so on. Many people yearn for taking out a high-quality pen from their suit pocket in front of their customers, but usually fail to take their first step because of its high price and pen leads cost.
But Japanese ball-pens are still popular among people who care a lot about writing utensils. They do perfect job on writing despite their fairly low cost. And with our Refill Pen Jacket, it not only levels up the appearance of the pen, but also improve the comfort while writing.
NATURAL WOOD COLLECTION

MAPLE
Maple (kaede) is a deciduous broadleaf tree. One of the main attractions of maple wood is its grain. The irregular figuring that appears on the surface of woods such as hard maple and itaya maple includes patterns like curly grain and bird’s eye, resembling waves or the eyes of birds, and has been cherished by many people since ancient times. Its pale white to skin-toned color is also one of the appealing characteristics of maple wood.

CHERRY
Cherry is a type of sakura (cherry tree). One of its key characteristics is its significant aging transformation—the more it is used, the more it develops a beautiful, rich color. Cherry wood starts with a light pink tone, but gradually deepens over time, turning into a warm amber hue. It is perfect for those who enjoy the changes that come with age, and it is also a popular choice for solid wood furniture.

WALNUT
Walnut is a deciduous broadleaf tree belonging to the walnut family. It features a gentle, flowing grain and combines beautiful appearance with excellent properties, making it highly valued for a long time. One of the key characteristics of walnut wood is that it is resistant to cracking while having a moderate hardness, making it very easy to work with. Even without finishing, it develops walnut’s signature rich, dark brown color with a natural luster, making it an exceptionally attractive material in terms of appearance as well.

KARIN
Karin (Chinese quince wood) is hard and has a strong reddish tone, and in the timber industry it is distinguished as “hon-karin” (true karin). It is very dense and heavy, making it one of the wood species that is resistant to scratches in normal use. Karin wood has a very fine and beautiful surface texture with a natural, elegant luster. Due to its high density per volume, it is extremely hard and highly durable.

Eco-friendly Packaging
Refill Pen Jacketcomes ineco-friendly packagingmade fromrecycled paper and fibers. It is biodegradable, reusable, and printed in a single color to reduce ink use and environmental impact.
User Guide

Product Information
Product Name: Smart Refill Pen Jacket
Brand: Dëff®
Models:
RP-ST23W-MP (Maple Wood)
RP-ST23W-CH (Cherry Wood)
RP-ST23W-WN (Walnut Wood)
RP-ST23W-KR (Rosewood)
Material: Stainless Steel for holding grip & mounting clip
Natural Wood for pen body & pen cap
Size: 15.7x1.36 cm
Weight: 32.5g
Product Warranty
- Product warranty period is 6 months from the date of purchase
- Used refills (replacement refills) are not covered by the warranty.
- Defective new items are valid for 30 days from the date of purchase or the date the item arrives. If there is a
- product defect or parts shortage, we will send the missing parts or replace the product.







