"Here’s the key: a wallet on chain keeps everything on lock. Crafted of metallic crossgrain leather, this mini leather wallet is equal parts durable, fashionable and portable. Finished with a snap closure, it opens to reveal a soft, fabric-lined interior with two card slots and enough space for your cash and other small accessories. Our favorite detail: the elegant detachable chain strap, which can be worn crossbody, or doubled up and carried by the hand or over the shoulder. Mini, but…