We think that your best everyday carry should stay together at all times - Customize your current D-series (not compatible with D03 wallets) or T-series wallet with the Leather or DTEX Pocket Bifold with Pen Cavity and add your ideal pen to your daily pocket dump. The Dango Pen fits perfectly in the pen cavity, but will also fit any pen that is up to 11mm in diameter. 

*** Pen & Notebook not included ***

Also available in DTEX material

Compatible with: D01, D02, D007 and All T-Series wallets only.
Not compatible with D03 Wallets

https://www.dangoproducts.com/collections/d-series-wallet-parts-accessories/products/3-pocket-bifold-pen-dtex