Tom's Studio The Field Mouse Mini Refillable Pen

The pen for when you need a pen!

The Field Mouse by Tom's Studio is a miniature writing pen built for the moments when ideas strike and your usual tools are nowhere nearby. Clip it to your keys, lanyard, or bag, and you'll always have something to write with. It's small enough to forget it's there––until you need it. Writes with a Japanese-made tip and compatible with any standard fountain pen ink, held in a 3mL reservoir. The brass loop lid doubles as the keyring attachment, so the whole thing stays capped and protected. When the ink runs out, just refill it!

Each Field Mouse comes with a writing tip, ink reservoir, and a 3ml sample of Midnight Ink to get you started. We recommend against using shimmer inks. Available in Sage, Brass, and Ivy.

• Length capped: 63mm / 2.48” | Uncapped: 54mm / 2.12”
• Weight: 12g (Ivy, Sage) / 23g (Brass)
• Writing tip: 0.3–0.5mm depending on pressure