Look. I could not possibly explain this as well as Rickshaw does, so please appreciate their description as below! This case has the added three pen slot option on the inside.
Sinclair Model R Design Notes:
The new Sinclair “Model R” features a number of signature Rickshaw touches. First things first, we added our supersoft Royal Plush lining to the interior. The interior configuration features the same three pen slots on one side, and a single wide slot on the other. Both sides are lined with plush. We also added a thin layer of foam padding inside the front and rear panels for extra structure and protection. Next, we tweaked the overall dimensions to make it “Coozy compatible” — slightly taller, wider and fatter, to accept our size “L” 2-pen and 3-pen plush pen Coozies in the middle. The size of the YKK zipper has been increased from #5 to #8 to make the case slightly fatter for a little extra internal storage capacity. The overall dimensions of the Sinclair Model R are 6.75” x 4.25” x 0.75” (the same height and width as our Coozy Case, but thinner by 0.75"). We added an outside slash pocket, for ready access to a pen and pocket notebook, or convenient stowage of your cell phone or other EDC gear. We added color-coordinated paracord zipper pulls for a little extra flair on the outside. We offer a broad assortment of fabrics, including the original 1000D Cordura in a wide range of solid colors, plus our own in-house printed fabric designs, waterproof sailcloth and other specialty fabrics.