Fountain pen with frosted ink bag reservoir writing instrument using 0.38mm or 0.5mm nib in black or blue colour, 13.8cm long with 1.1cm diameter plastic barrel for smooth ink flow and precise writing control
Frosted ink bag fountain pen with 0.38mm or 0.5mm nib choice in black or blue colours

This fountain pen combines practical writing functionality with simple operation, featuring an internal frosted ink bag reservoir designed to maintain consistent ink delivery to the nib. With a choice between 0.38mm and 0.5mm nib sizes, users can select the line width that best suits their handwriting style, whether for detailed note-taking or bolder signatures. The 13.8cm length and 1.1cm diameter barrel, made from high-quality plastic, provides a comfortable grip during extended writing sessions. Available in classic black or blue finishes, this pen serves as a reliable tool for everyday writing tasks in educational, office, or personal contexts without requiring specialised knowledge to operate effectively.
Features and Construction

The pen's design focuses on straightforward writing performance through its frosted ink bag mechanism and dual nib options. This section details the materials, measurements, and functional elements that define this writing instrument's practical application.
Material and Build
The primary construction material is high-quality plastic, forming the pen's main barrel and housing the internal components. This material choice contributes to the pen's lightweight feel and durability for daily handling. The frosted ink bag reservoir sits within this plastic housing, functioning as the ink delivery system that feeds the nib. The plastic barrel also provides the structure for the pen's 1.1cm diameter, which influences grip comfort and overall balance during use.
Size and Practical Fit
With a total length of 13.8cm and consistent 1.1cm diameter, this fountain pen fits comfortably in standard pen cases, pockets, or bags without excessive bulk. These dimensions make it suitable for both adult and larger-handed users, providing adequate surface area for finger placement during writing. The size balances portability with sufficient barrel length to accommodate the ink bag reservoir and nib assembly while remaining manageable for everyday carrying and storage alongside other stationery items.
Uses and Placement

This fountain pen serves multiple writing purposes across different environments, from formal documentation to personal journaling. Its design elements support both occasional and regular writing needs without specialised preparation or excessive maintenance requirements.
Event or Professional Use
For professional settings, the choice between 0.38mm and 0.5mm nibs allows users to match the pen to their documentation needs—finer nibs for detailed annotations or forms, broader nibs for signatures or headings. The black or blue colour options provide appropriate finishes for office environments or formal occasions where writing instruments contribute to professional presentation. The consistent ink flow from the frosted bag reservoir helps maintain clear, uninterrupted writing during meetings, client signings, or administrative tasks.
Everyday Home Use
In personal or educational contexts, this pen supports daily writing activities like journaling, homework, correspondence, or creative writing. The plastic construction withstands regular handling while the ink bag system reduces the likelihood of unexpected ink stoppages during longer writing sessions. The two colour choices let users select a pen that fits their personal style or organisational system, whether coordinating with other stationery or simply preferring one hue over another for visibility and aesthetic reasons.
Benefits and Buying Value
This fountain pen offers practical advantages through its straightforward design and measurable specifications. The following points highlight why this particular writing instrument might meet user needs compared to basic alternatives or more complex fountain pen systems.
Reuse and Low Maintenance
The frosted ink bag reservoir system simplifies ink management compared to some fountain pen filling mechanisms, as the entire bag can be replaced or refilled according to the user's preference. This design reduces cleaning complexity and potential for ink spillage during refills. The plastic construction requires minimal specialised care—wiping the exterior clean and occasional nib rinsing maintains functionality without demanding extensive maintenance routines or special tools that some fountain pen systems require.
Why Choose This Product
Selecting this fountain pen provides a balance between fountain pen writing characteristics and manageable operation. The measurable 0.38mm and 0.5mm nib options offer genuine line width differences that affect writing appearance and ink usage. The 13.8cm length and 1.1cm diameter provide concrete dimensions that users can compare against their hand size and grip preferences. Rather than claiming superior performance without evidence, this pen offers defined specifications—nib sizes, length, diameter, colour choices—that help buyers make informed decisions based on their specific writing needs and physical preferences.