TPU CONSTRUCTION: TPU Covers are smooth to the touch, flexible, yet extremely durable and strong. OPERATING: Side-opening orientation. Holds a Rite in the Rain 3” x 5” Top-Spiral Notebook. CARD HOLDER: Inside the wallet are six credit card slots, 2 cards can comfortably fit in each slot. PASSPORT HOLDER: Your passport will fit on the left-hand panel. Easily fits cash, receipts, and other Rite in the Rain products like our mini-staple notebooks, pocket calendars, and memo notebooks. PEN HOLDER: Securely holds new Rite in the Rain pens such as the BK16, BK17, and BK20. PERFECT WALLET: Designed to work with any number of products and writing instruments.