Moonlit Voyage | The Paper Mouse x Opus 88 Mini Fountain Pen

The Moonlit Voyage pen is sold out as of 11/24/25. We are hoping to restock at the end of this year or the beginning of 2026 and will post an update when we have more information.

We are in the process of shipping Moonlit Voyage pens preordered before 11/22. You should be receiving a shipping notification by the end of the week for your order, UNLESS IT ALSO INCLUDED A FLOWING FRIENDSHIP PEN OR SPECIALTY NIB. If your order was placed before 11/16 and included both pens, we will have contacted you by email already. If the order was placed after 11/16, everything will ship together in mid-December.

Take a magical trip through a dreamy night seascape with our Paper Mouse and Bear friends. We partnered with OPUS 88 to design a fanciful mini pen inspired by the illustration from our Fly Me to the Moon Logical Prime notebooks. Follow the Mouse on its trusty paper airplane through the moonlit sky around the pen’s cap. Below on the pen barrel, the Bear ventures on the ocean waves in an origami boat.

This mini pen is made of smooth resin with metal accents, and the screw-on cap can be posted to extend the pen's length. The pen barrel is a transparent blue color to match the night scene and offers a large ink capacity, thanks to the eyedropper filling system. The shutoff valve inside helps prevent leaking. Unscrew the blind cap at the end of the pen when you're writing to allow ink to flow, and tighten it up when you're traveling to shut off the ink supply. 

• Compatible with specialty and replacement nibs
• Comes with an Opus 88 branded nib in the selected size
• Uses bottled ink only
• Comes in a gift box with a glass eyedropper
• Includes a matching exclusive postcard
• 4.7" when closed
• 4.3" when uncapped
• 5.5" with cap posted