Tom's Studio Wren - Iris Con40 these covers are designed to

these covers are designed to enhance your planning experience

More than simply widening our selling options

In comparison to ballpoint pen ink

Herbin was fond of dried carob pods as a healthy food during his voyages

Filling System:  Universal International Cartridge/Converter

Tom's Studio Wren - Iris Con40 these covers are designed toWren Take Flight & Write A beautiful and infinitely refillable writing pen, equipped with a Japanese made writing tip. We're on a mission to make choosing refillable options easier, so you can now buy two (or more!) Wren pens and save 10% Every year, millions of disposable pens are thrown away, adding to the growing environmental waste. Similar to printer ink cartridges, pen companies design their products for short term use, pushing you to repeatedly