I should have researched this product more. I can't stand it. A better alternative is credit-card sized nylon pouch which zips closed to keep everything securely contained. Chisco makes them really cheap, and they are stylish and durable. REAL heavy duty nylon is so much better, not this thin stuff that you have to buy "extra" units of just to replace every year or so. A marketing gimmick. I see no real advantage to this. I don't believe all the customer reviews either.