Attaches easily, just like a sticker. Removable. Extremely slim. Holds your valuables securely. Combine your wallet and Android®, iPhone® or Blackberry®.Holds credit/debit cards, drivers license, student ID, some cash, and more.It's secure. Items won't fall out (even if you flip it over.)Perfect for men, women, and even kids. Great for the gym, shopping, bars, and everyday use