TPU Construction: Smooth, flexible, yet durable and strong. Operating: Side-opening design holds a 3* x 5* Rite in the Rain Top-Spiral Notebook. Card Holder: Six credit card slots, comfortably fitting two cards per slot. Passport Holder: Left-hand panel fits passports, cash, receipts, and various Rite in the Rain products. Pen Holder: Securely holds Rite in the Rain pens like BK16, BK17, and BK20. Perfect Wallet: Compatible with a variety of products and writing instruments. This versatile TPU wallet combines durability with functionality. It features a side-opening design to hold a 3* x 5* Rite in the Rain Top-Spiral Notebook, six credit card slots, a passport holder, and space for cash or additional Rite in the Rain products. Complete with a secure pen holder for BK16, BK17, and BK20 pens, it*s the perfect all-in-one solution for organization and convenience.