Say goodbye to bulky wallets and unsightly bulges in your jeans. Sorry, it's not a cure for love-handles but Tyvek Wallets do offer a great solution for storing your cash and cards. These Tyvek Wallets offer a tear and water resistant, expandable storage solution for cash and cards. The folded design allows the wallet to expand gradually as needed - holding up to about 25 cards - which should be enough for even the most confirmed shopaholic.