Apple's iPad 2 ushered in the magnetic Smart Covers which were either polyurethane or leather and did a decent job of customizing the device as well as protecting the screen and doubling as a stand. Suceeding models like the iPad 3 with Retina display brought in Smart Cases which wrapped entirely around the iPad. It seems the colourful options are now being discontinued by Apple for the older iPad 2, iPad 3 with Retina display and iPad 4 with Retina display in favour of single dark grey Smart Cases and Smart Covers. This means if you want some of the brighter hues (including the lovely PRODUCT(RED) covers then it might be worth racing to retailers to catch leftover inventory. Buyers of the iPad Air won't have this issue as Apple is introducing a bunch of colours for Smart Covers and Smart Cases.