... 1)support ipad,iphone4G,computer 2)foldable,roll-up,waterproof,made by silicone 3)bluetooth waterproof keyboard flexible bluetooth keyboard1> Supports Apple's iPad ... Microsoft Windows XP, 7, Vista and Mac 3> Flexible, foldable, roll-up, water-resistant and made of silicone 4> Built-in ... protection 7> Can roll it up to anywhere, so it can be rigid like convenient and flexible keyboard and more portable ...