IMPORTANT: This listing is for a cash strap upgrade only. The PROOF Cash Strap with D-ring replaces the standard cash strap on all original PROOF Wallets. Same PROOF Wallet. Even More Secure. Anyone looking for a little extra security will appreciate what a simple upgrade can add. If you’ve got an Original PROOF Wallet and want the option to connect a pocket chain, wrist lanyard, key ring, or other accessory, the Cash Strap with D-Ring makes it easy. Available in Top Grain Bomber Leather and Black Full Grain Leather, it adds more versatility while maintaining the clean, minimalist look of your wallet. Premium Construction & Materials Stainless Steel D-Ring: Durable attachment point for a pocket chain, lanyard, key ring, or other accessory. Premium Leather: Available in Top-Grain Bomber Leather or Black Full-Grain Leather. Heavy-Duty Cash Strap: Keeps folded bills firmly in place. Compatibility: Designed exclusively for the Original PROOF Wallet chassis. The PROOF Unrivaled Guarantee A Real Lifetime Guarantee: Uncompromised quality. Unrivaled service. We don't just meet expectations-we shatter them. If you manage to damage your cash strap, we replace it. For life. Period. Veteran Owned: Proudly veteran-owned, with a veteran guarantee. Specifications Overall Dimensions: .75" W x 1.5" H x 0.5" D D-ring Opening: .3" W x .5" H