Description The PROOF Obsidian is a slim RFID-blocking wallet built on a 260 brass frame in a brushed finish, wrapped in black full-grain leather. It holds up to 25 cards inside the frame and 20 folded bills under the rear strap, at 3.3 oz. How It Carries Cards sit inside the brass frame rather than in leather pockets, so the plate takes the pressure instead of the card edges and protects them from bending. RFID-blocking material is built into the interior. A leather pull tab on the front fans the stack out in one motion. An elastic strap across the back holds folded bills flat against the plate. Brushed 260 Brass 260 brass is a dense cartridge-brass alloy with a warm gold tone, brushed here rather than polished. It is the reason this wallet weighs 93 g, and it reads warm against the black leather rather than cool. Full-Grain Leather Full-grain keeps the outermost layer of the hide intact rather than sanding it smooth. It is the densest part of the skin, it takes a scuff without losing the surface, and it darkens as it ages. Designed by a team of U.S. military veterans and engineers. Protected by US Patent No. 12,604,959. Covered by a lifetime warranty against damage and loss. Spec Height: 3.75 in / 95 mm Width: 2.2 in / 56 mm Thickness: approximately 0.5 in / 13 mm, depending on card load Weight: 93 g / 3.3 oz Frame: 260 brass, brushed finish Leather: black full-grain Capacity: up to 25 cards and 20 bills RFID-blocking interior material Included: stainless steel hex key multi-tool sized to the wallet bolts Maker: PROOF, designed by a team of U.S. military veterans and engineers US Patent No. 12,604,959 Warranty: lifetime, covering damage and loss