Physics Chalkboard Breve Card Wallet

Outer fabric: Physics chalkboard, sky blue; inside: black 

Just hopping out for a coffee, gym session, or quick errands? You probably don't need to carry all the stuff in your purse or wallet -- just the essentials. Clip this minimalist card wallet to your key fob or lanyard, pop in your ID, a debit card, and a few dollars in cash, and you're all set. Or keep your medical cards on hand and organized in your bag. Whatever you use it for, it'll keep your important cards close without the bulk.