Magnet actually save me from dropping this little tiny thing, because it attached itself to my car keys one night getting in my car; would have surely fell on the ground.  This thing is small, so you can't carry all your cards, maybe 8 total including IDs, Credit cards, and business cards (~2-3x business cards = 1x credit card). More than 8 is possible, but then you're ruining the stitches and stretching the leather, so eventually it may lead to cards falling out after sometime. The advantage of this isn't about storage space, its about being compact, thin, light-weight, and functional.  Cards are held in place tightly, Cash is held in place both by the force of the magnet and the friction of the leather against the money cloth, so it would take a rough act to dislodge your cash.  5-stars for achieving its purpose.