DeFF 5th Gen Refill Pen Jacket (Extra Short Design Collection｜Natural Wood/Carbon)
- As part of the Extreme Short Design Collection, the 5th Gen Pen Jacket builds on the portability of the 4th Gen Pen Jacket with the addition of two new materials: Natural Wood and Carbon Fiber.
- Perfect for gifts such as Father’s Day, Mother’s Day, school entrance celebrations, birthdays, and commemorative occasions.
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Personal engraving available. Mail delivery supported.
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)
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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A new material twist on our 4th-gen base
While keeping the signature style that lets you use your favorite refill, we re-engineered the design to maximize portability without compromising on comfort or premium quality—further elevating the reliability of the Refill Pen Jacket.
Sharing the exact same form factor as the 4th generation, this latest release introduces two distinct material options: natural wood, a popular favorite from our 2nd generation, and real carbon, making its debut for the very first time.
Excellent Portability and CleverDesign
PORTABILITY is the core concept of the 5th generation (retained from the 4th). Featuring a smart design where the cap doubles as the body, the entire pen fits perfectly inside the cap when stored, taking portability to a whole new level. As an added bonus, the pen can stand vertically on its own when closed, no stand required.
- Stored length: approx. 75 mm, easily fits in a pocket
- Writing length: approx. 125 mm, stable and comfortable to hold
Refills are ready to use — simply insert and start writing
The pen jacket contains just one component. Simply insert your refill into the fixed adapter and place it into the pen body—no shims, springs, or modifications needed.
✔ Compatible with common refills
✔ Supports D1 and 4C sizes
✔ Quick installation and intuitive to use
Metal Craftsmanship × ArtisanalQuality
- Grip: Stainless steel (SUS304)
- Pen body & cap: Natural Wood or Carbon Fiber
All components are precision-machined from solid metal using CNC, then carefully hand-finished by skilled artisans. The result is a tightly assembled, durable pen with a satisfying weight and feel.
Perfect Weight Balance
Writing stability isn’t about weight—it’s about weight distribution. This design positions the balance point at the center of the pen, with a slightly heavier tip, allowing natural, smooth control. Write exactly where you want—the lines stay steady and precise.
Precision-Knurled Grip
We applied a specialized knurling process to the grip. Inspired by the anti-slip textures on professional drafting pens, every dimension has been carefully engineered so you can maintain a secure, effortless hold without having to apply excessive pressure.
Optional Refill Case Available
An optional, dedicated refill case designed for D1 and 4C standard refills is also available. This accessory allows you to effortlessly carry and swap multiple refills on the go, unlocking the full potential of your Refill Pen Jacket to suit any occasion.
_ MATERIALS _
1. Natural Wood
Natural wood, a popular favorite carried over from our 2nd generation, while high-stress areas are reinforced with heavy-duty SUS304 stainless steel. For this collection, we selected two highly sought-after premium woods: Karin and Ebony, both renowned for their beautiful grain and durability.
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.
EBONY
Ebony is renowned for its intense, jet-black hue and extreme hardness, distinguished within the timber industry as "true ebony." As one of the most robust wood species available, it is exceptionally resilient against daily scratches. The wood boasts an incredibly fine grain texture that polishes to a deep, heavy luster. Thanks to its high density, it is remarkably hard and possesses outstanding, long-lasting durability.
2. Carbon Fiber
For the first time, we are introducing a carbon model machined directly from real forged carbon blocks. As the lightest edition in the series, it offers our lowest center of gravity for ultimate balance. It is available in two finishes to match your preference: a vibrant "GLOSS" and a refined, low-glare "MATTE".
Highly scratch-resistant and ultra-dense, the compressed carbon fragments reveal a unique, marble-like texture—the perfect fusion of maximum rigidity and ultra-lightweight performance.
GLOSS CARBON
MATTE CARBON
_ COLLECTION _
_ HOW TO USE _
Eco-friendly Packaging
The box is made from recycled paper and fibers, making it biodegradable or recyclable. Single-color printing is used to minimize ink consumption.
Product details
1. Natural Wood ＆ Stainless Steel
· Cap: Natural Wood (Karin/ Ebony)
· Front Sleeve (Grip): Stainless Steel (SUS304)
· Body with Clip: Clip section ABS + PC / Body section Natural Wood (Karin/ Ebony)
· Dimensions & Weight: Length 125.4 mm (Stored: 75.2 mm), Barrel diameter 15.2 mm, Weight 46.5 g (Stored)
2. Carbon Fiber ＆ Stainless Steel
· Cap: Carbon fiber
· Front Sleeve (Grip): Stainless Steel (SUS304)
· Body with Clip: Clip section ABS + PC / Body section Carbon fiber
· Dimensions & Weight: Length 125.4 mm (Stored: 75.2 mm), Barrel diameter 15.2 mm, Weight 47.5 g (Stored)
3. Refill Case
· Compatible Refills: D1, 4C (Length: 67–xx mm / Diameter: 2.30–2.35 mm)
· Capacity: Holds up to 5 refills
· Materials: Cap/ Body A6063 Aluminum Alloy
· Dimensions & Weight: Length 72.5 mm, Barrel diameter 15.2 mm, Weight 22 g
【 Usage Notes 】
- Refills are not included. Please use compatible refills that meet the specifications.
- Before use, ensure all parts are securely assembled to prevent any movement of the refill.
- Avoid clipping onto thick fabric (e.g., heavy coats), as it may deform the clip.
- Do not store in humid, wet, dusty, high-temperature, or direct sunlight environments, and keep out of reach of children.
【 Warranty 】
- Warranty Period: 6 months from the date of purchase or delivery.
- DOA (Dead on Arrival) Coverage: Within 7 days of purchase or delivery.
- Defective items within the DOA period may be repaired, replaced with parts, or exchanged.
- Refills are not covered under warranty.
