Our abstract monarch butterfly artwork is the perfect compliment to your Retro51 Monarch-theme pens — or any other pen in your collection.

*Price includes one sleeve. Pens not included.

We make the world's softest pen sleeves.

Each sleeve is made from scratch and made-to-order in our own shop, right here in San Francisco.

SLEEVE SIZING (Pen Length x Diameter, excluding clip):

• Short: 5.0" x 0.5" (130mm x 13mm) Examples: Karas EDK, R-Type, TWSBI Mini, Retro1951 Tornado Rollerball
• Medium: 5.5" x 0.6" (140mm x 15mm) Examples: Karas Decograph, RETRAKT, Retro1951 Tornado FP, WoodshedPenCo
• Long: 6.0" x 0.7" (152mm x 18mm) Examples: Lamy Safari, Pelikan 800/1000, Atellier Lusso, Brute Force Design, New Esterbrook Estie