From Everyday Refill to Premium Pen: Deff to Showcase REFILL PEN JACKET Series at Stationery Fair

Deff Co., Ltd. (President: Toru Araki, Head Office: Minato-ku, Tokyo) will exhibit at the '37th International Stationery & Paper Products Expo Summer,' part of the '29th Lifestyle Week [Summer],' to be held at Tokyo Big Sight from June 24 (Wed) to 26 (Fri), 2026.

At the booth, the company will showcase its stationery product line, the 'REFILL PEN JACKET' series. Visitors can experience firsthand the distinct textures, weights, and writing balance offered by materials such as aluminum, titanium, natural wood, and carbon fiber.

Additionally, Deff plans to display prototype models of a new REFILL PEN JACKET and other upcoming stationery products. These pre-release items will offer attendees a glimpse into Deff’s future vision for innovative stationery.

Booth number: L99-33. Deff welcomes visitors from stationery stores, lifestyle shops, select retailers, and gift-related businesses, as well as anyone interested in premium stationery and high-value-added products.

Transforming Your Everyday Refill into a Premium Writing Instrument

The REFILL PEN JACKET allows users to attach standard pen refills to a premium outer casing crafted with meticulous attention to material and design, elevating the everyday writing experience.

Developed to preserve the familiar writing feel of commonly used refills while enhancing the tactile sensation, weight, and sense of ownership when held.

The product lineup features a diverse range of materials, including precision-engineered aluminum and titanium, warm natural wood with unique grain patterns, and lightweight yet distinctive carbon fiber.

Full Series Display at the Venue

This exhibition will present the entire REFILL PEN JACKET series, categorized by material and collection, allowing visitors to compare models side by side.

Attendees can physically experience qualities that specifications and photos cannot fully convey—such as grip texture, writing balance, and the distinct impression of each material.

In addition to retail opportunities, Deff will also discuss potential collaborations, including gift solutions, corporate promotional items, commemorative products, OEM, and custom-order options.

Prototype Display: New REFILL PEN JACKET and New Stationery Products

A prototype of the new REFILL PEN JACKET, currently under development, will be exhibited.

Building on the material processing techniques and design philosophy of existing models, this new version aims to meet broader usage scenarios and user needs.

Furthermore, Deff will preview new stationery products that follow the REFILL PEN JACKET. These represent the company’s effort to extend its expertise in smartphone accessories and lifestyle products—particularly in design and material selection—into the stationery domain.

*Note: As these are prototype displays, specifications, release dates, and pricing are subject to change.

Products on Display

### REFILL PEN JACKET Stream Design Collection

A series featuring aluminum and titanium, known for their precision feel and smooth usability. With a minimalist design suitable for business settings, this model is ideal for daily use. The original version also includes natural wood variants, offering warmth and unique grain patterns.

### REFILL PEN JACKET Magnalock Design Collection

Compatible with over 700 types of refills. This popular model combines the premium feel of brass and aluminum with a magnetic cap mechanism that ensures a satisfying attachment and detachment experience.

### REFILL PEN JACKET Extra Short Design Collection

A compact series that balances portability with premium quality. Despite its small size, it delivers a strong sense of material presence and refined operability.

### New REFILL PEN JACKET (Prototype)

A new model currently in development will be displayed as a prototype. Designed to offer new usage methods and value propositions distinct from existing models, it will be unveiled to visitors for the first time.

### New Stationery Products (Prototype)

Upcoming stationery products following the REFILL PEN JACKET will also be previewed. These aim to transform everyday stationery into more appealing tools through innovative materials, functionality, and design.

Exhibition Details

Event Name: 29th Lifestyle Week [Summer] Sub-Exhibition: 37th International Stationery & Paper Products Expo [Summer] Dates: June 24 (Wed) – 26 (Fri), 2026 Hours: 10:00 – 17:00 Venue: Tokyo Big Sight Booth Number: L99-33 Exhibitor: Deff Co., Ltd.

Visitor Registration for the International Stationery & Paper Products Expo [Summer]:

[Free Admission / Includes ¥1,000 meal voucher usable at the venue]

https://www.lifestyle-expo.jp/summer/ja-jp/register.html?code=1690139074993312-HWM

*Free admission with prior registration by 17:00, Friday, June 19.

After this period, the admission fee is ¥5,000 (tax included). Register early.

About the 'Deff' Brand

The name 'Deff' is derived from the acronym 'Design Evolution For the Future.' It embodies the company’s mission to deliver innovative ideas and evolving designs that provide optimal lifestyle solutions today, while creating a more convenient and comfortable future.

In an era of product abundance, user needs are constantly evolving, and so is the definition of 'usability.' To meet these real-time demands, Deff handles both product planning and design in-house. The company continues to pursue meticulous craftsmanship in every product, from selecting optimal materials to refining designs that achieve both performance and aesthetic excellence.