Bring tropical colour and classic fountain pen character to everyday writing with the Esterbrook JR Pocket Fountain Pen – Key Lime GT.

Part of Esterbrook’s Paradise Collection, the Key Lime edition features a vibrant green acrylic resin body inspired by the tropical colours and relaxed atmosphere of Key West. Its polished material displays tonal depth as the pen moves under the light, giving this compact writing instrument a bright and distinctive personality.

The vivid Key Lime body is complemented by elegant gold-plated trims, including the clip and cap bands. A contrasting purple accent surrounding the gold-coloured cap finial adds a playful finishing detail and connects the design to the Paradise Collection’s expressive Key West theme.

A Modern Revival of an Esterbrook Classic

The JR—short for J Reborn—is Esterbrook’s modern interpretation of its classic J-series pocket pen. The original design was valued for its practical, compact proportions, and the contemporary JR preserves that easy-to-carry character while introducing modern materials, filling options and interchangeable nibs.

At approximately 126 mm when capped, the JR Pocket is compact enough to carry in a shirt pocket, handbag, organiser or everyday pen case. Posting the cap extends the pen to approximately 151 mm, providing additional length and balance during longer writing sessions.

Gold-Plated JoWo Stainless-Steel Nib

The Esterbrook JR Key Lime GT is fitted with a gold-plated JoWo No. 5 stainless-steel nib. JoWo nibs are widely used in modern fountain pens and are designed to provide dependable ink delivery and a smooth everyday writing experience.

This Penshelf listing is available in two nib sizes:

Medium Nib – M

The Medium nib offers a smooth, versatile writing line suitable for most everyday uses. It provides more visible ink flow than a Fine nib while remaining practical for notes, journaling, signatures and professional correspondence.

Choose the Medium nib for:

• Regular everyday handwriting
• Office notes and correspondence
• Journaling and diary writing
• Medium-sized handwriting
• Smooth writing with moderate line width
• Writers purchasing their first premium fountain pen

Broad Nib – B

The Broad nib produces a wider and more ink-rich line. It allows the colour, shading and other characteristics of fountain pen ink to appear more clearly on suitable paper.

Choose the Broad nib for:

• Large or expressive handwriting
• Bold signatures
• Journal headings
• Personal letters and correspondence
• Fountain pen-friendly paper
• Writers who prefer a broad, smooth and generous line

The final line width may vary depending on the ink, paper, writing pressure and individual writing angle.

Cartridge and Converter Filling System

The JR Pocket uses a convenient standard international cartridge-converter filling system. It can be used with compatible international ink cartridges or filled from bottled fountain pen ink using the included converter.

Cartridges offer convenience for work and travel, while the converter gives writers access to a much wider selection of bottled fountain pen ink colours.

Compact, Comfortable and Postable

Despite its pocket-friendly size, the Esterbrook JR is designed to remain comfortable during regular writing. The cap can be securely posted on the rear of the barrel, extending the pen and shifting its balance for users who prefer a longer writing instrument.

The lightweight resin construction helps reduce hand fatigue, while the threaded cap protects the nib and prevents the pen from opening accidentally while being carried.

Made for Everyday Individuality

The Esterbrook JR Pocket Key Lime GT balances vintage-inspired proportions with a bold contemporary finish. It is compact without appearing delicate, colourful without losing its premium character and practical enough to become an everyday writing companion.

Whether used for journaling, professional notes, travel writing or personal correspondence, the Key Lime GT brings energy and individuality to every page.

It also makes a memorable gift for fountain pen enthusiasts, writers, graduates, professionals and anyone who appreciates distinctive writing instruments.

Key Features

• Esterbrook JR Pocket fountain pen
• Part of the Paradise Collection
• Vibrant Key Lime green finish
• Polished acrylic resin body and cap
• Contrasting purple cap-finial accent
• Elegant gold-plated trims
• Gold-plated JoWo No. 5 stainless-steel nib
• Available in Medium and Broad nib sizes
• Interchangeable JR nib system
• Standard international cartridge compatibility
• Converter filling system
• Converter included
• Threaded screw-on cap
• Cap can be posted
• Lightweight, pocket-friendly construction
• Inspired by Esterbrook’s classic J-series pens
• Suitable for everyday writing, journaling and travel
• Presented in original Esterbrook packaging

Product Specifications

The construction, nib, filling system, dimensions and weight are based on the official collection information and specialist product specifications.

Why Choose the Esterbrook JR Key Lime GT?

Vibrant Paradise-Inspired Design

The bright Key Lime body brings a distinctive tropical character to the pen. Its contrasting purple finial detail adds visual interest without overpowering the refined gold-plated trims.

Pocket-Friendly Proportions

At approximately 126 mm when closed, the JR is easy to carry in a pocket, organiser, handbag or compact pen case. Posting the cap transforms it into a longer writing instrument for greater comfort.

Choice of Medium or Broad Nib

The Medium nib provides a versatile line for everyday writing, while the Broad nib offers a wider and more expressive result. Buyers can select the writing experience that best suits their handwriting and preferred paper.

Interchangeable Nib System

The JR uses an interchangeable nib system, allowing compatible Esterbrook JR nib units to be replaced when a different writing width or style is required.

Flexible Ink Options

The cartridge-converter system allows convenient use with standard international cartridges while also supporting bottled fountain pen ink through the included converter.

Heritage with Modern Practicality

The JR reinterprets Esterbrook’s classic J pocket pen for contemporary writers, combining vintage-inspired proportions with modern resin construction and a convenient filling mechanism.

Frequently Asked Questions