The Mini-Card Case is especially designed just for Credit Cards, Business Cards, Driver's License, perhaps a few folded bills.... It has two pockets and when folded the case is scarcely larger than a credit card.... Even with 6 Credit Cards or 16 Business Cards it's only 1/4 inch thick . .....The material is ripstop nylon 'spinnaker cloth.' Although it's as thin as paper, it's incredibly strong. It breathes, so it does not get sticky in the summer.And it's water resistant, so the contents stay dry....No animal products are used in ALL-ETT products.... For more information see the ALL-ETT website.Thinnest wallet for just a few cards. ..Smallest of the Ultra-thin ALL-ETT billfold line.Fits inside most other wallets without a bulge......Business cards stay crisp and cleanAs a front pocket wallet it's barely there........Fits even little tiny watch pocketsPerfect for a night out or the beach when you don't want to take your entire wallet.You can't get more compact than this unless you carry your valuables loose.