Silicone wallet with 3M adhesive sticks to the back of most smart phones. Securely holds up to 3 credit cards, a drivers license or business cards. It is also good for hotel keys and will not deactivate the strip. Credit cards will be protected from deactivation on phone. Perfect for work, a night on the town, or sporting events, when all you need is a Driver's License and debit, credit card or cash, not your entire wallet or purse.