If you pay as close attention to detail as we do, then you know the massive difference the most subtle accent makes. You've got the wallet, now you can match the occasion with the PROOF Wallet Bolt Upgrades.  Our fine top grain leathers, carbon fibers, and aerospace metals are securely fastened with high strength bolts to create a sleek, ultra functional minimalist design. Switch, swap, and upgrade in minutes. Gold watch occasion? Swap for gold. Silver anniversary coming up? Nickel is a must. PROOF Wallets are designed to carry up to 25 cards safely and securely with built in RFID Blocking internal materials.  They feature a snug cash strap on the back and an intuitive pull strap on the front for easy card access. As with all our products, Bolt Upgrade Kits come with the legendary PROOF Wallet UNRIVALED Guarantee: no questions asked, full refund/return policy with no expiration date. Yes, you read that correctly- we believe in this product. Nickel finish: 6x Bolts, 1x hex key wrench, 1x reusable carrying case Gold finish: 6x Bolts, 1x hex key wrench, 1x reusable carrying case Lifetime Warranty (A real one, not a deceptive "limited" lifetime warranty. If you have issues, we're solving them immediately) No Questions Asked Full Refund/Return Policy