Hello all, I recently purchased an iPad Air 2 with the Apple Smart Case. I love everything about it but I'm worried about putting it in side of my backpack along with my textbooks because I'm worried that it will get crushed. Can anyone recommend me a hard or semi-hard sleeve that my iPad will fit inside while still in the Apple Smart Case? It could even be a laptop case or something else that isn't necessarily designed for the iPad. Thanks in advance!