Callet combines the two things we all carry around everywhere we go, our wallets and BlackBerrys, into one. The idea behind it is simple: Protect your BlackBerry and your cards (credit, debit, ID, license; etc) with one single accessory.
This is specially useful for the ladies that might not always have pockets or want to carry a purse everywhere they go. I was actually going to try to order one when I realized they only have cases for the Curve 83xx, 85xx, 89xx, 93xx series, Bold 9650 and 97xx series, and Tour 9630 series. Hopefully they'll add devices from the 2011 soon.