There are hundreds of third-party iPad case and bags on the market, each specifically made for either the original iPad or the iPad 2. Here are a few things to look for when shopping for iPad protection.
First, keep in mind that the original iPad and the iPad 2 have slightly different shapes, so a case or bag made for one may not fit the other.
When shopping for a form-fitting case, make sure it doesn’t block the iPad's bottom-mounted speaker and dock-connector port; top-mounted headphone jack and microphone; front and back cameras (for the iPad 2); and buttons and switches.
And if you're shopping for a bag, and you see one that claims to be perfect for both iPads and netbooks, be suspicious.