We use proprietary nylon microfiber material that is 10 times thinner than leather. Instead of too-small plastic card pockets that can stretch out, causing your credit cards to spill on the ground, our wallet pockets are extra-wide with a non-slip coating inside to secure your cards and cash. Plus, if you drop your Big Skinny wallet into a puddle, just toss it into the washing machine using the gentle cycle and then let it air dry. Shop our dozens of wallet styles for men and women. Kids love Big Skinny wallets, too.