... ,waterproof,made by silicone 3)bluetooth waterproof keyboard flexible bluetooth keyboard1> Supports Apple's iPad, iPhone ... Windows XP, 7, Vista and Mac 3> Flexible, foldable, roll-up, water-resistant and made ... 4> Built-in Li-battery chargeable by portable mini USB 5> Different colors are available 6> ... so it can be rigid like convenient and flexible keyboard and more portable than a standard keyboard ...