PROOF Wallet | The Monolith | Black Ballistic Nylon & Black Full Grain Leather with Dark Gunmetal The PROOF Wallet incorporates fine full grain leather and aerospace metals into a sleek, ultra functional minimalist design. It allows carrying up to 25 cards safely and securely with built in RFID Blocking internal materials. We've topped it off with a snug cash strap on the back and an intuitive pull strap on the front for easy card access. 2.25" W x 3.75" H x ~0.5" T (Based on card load) Weight: 49.5 Grams Materials: Ballistic Nylon | Full Grain Leather | Aerospace Grade Aluminum Card Capacity: Up to 25 Cards & 20 Bills RFID Blocking Lifetime Warranty I used this wallet for one day. Great wallet, but not my thing.