TPU CONSTRUCTION: TPU material is smooth to the touch, flexible, and yet extremely durable and strong. OPERATING: Top-opening orientation. Holds a Rite in the Rain 3” x 5” Top-Spiral Notebook. 3/8” wide elastic closure keeps contents secure. CARD HOLDER: Inside the Wallet are six credit card slots, 2 cards can comfortably fit in each slot. CLIP NOTCH: Use your pen or pencil’s clip to securely attach it to the Wallet. PEN or PENCIL HOLDER: Recommended Rite in the Rain pens and pencils: BK16, BK17, 15, and BK20. PERFECT WALLET: Designed to work with any number of products and writing instruments.