Keyring-friendly solid brass loop lid for easy attachment to keys, lanyards, or bags, ensuring you never miss a note
Pocket-sized and lightweight design for effortless portability, ideal for quick sketches or spontaneous writing
Infinitely refillable with any standard fountain pen ink, supporting sustainable and cost-effective use
Available in five joyful colors plus a patina-loving brass top, offering aesthetic versatility
Handcrafted with quality materials for durability and a unique, artisanal touch
Summarized by Shop
The pen for when you don’t have a pen.
Say hello to The Field Mouse – your go-everywhere, write-anywhere, infinitely refillable sidekick. Inspired by its folklore namesake, this tiny tool is made for moments when ideas strike and your usual pen is miles away. Hook it to your keys, your lanyard, or your bag, and you’ll never be caught sc
Ink Type
Standard fountain pen ink (refillable)
Tip
Writing tip, fine or standard (varies by model)
Body Material
Solid brass, stainless steel, or wood (varies by model)
Colors
Blue, Gold, White, Pink, Green, Silver (varies by model)
Dimensions
Pocket-sized (exact size not specified)
Weight
Lightweight (exact weight not specified)
Summarized by Shop
4.8
168 ratings
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Beautiful!
So pleased with my purchase of a field mouse! It hangs on my keyring, attached to my handbag, and is just the most useful, beautiful pen I’ve ever owned…I’ve popped the wren onto my wish list for when people ask me for present ideas!😊
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Pearl · 6 days ago
Love this little Pen!
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Deanna · August 19, 2026
This the nicest little pen, fits perfect on my name badge when im at work. Keeps a pen always handy now, no matter where I'm at. Love that it is refillable. Love the replaceable nibs and reservoirs.