How do you make a really slim case really protective? With an orange colored material called D3O. And Tech21 is a company known for incorporating this material into its protective cases, more notably the Impact Band for the iPhone, as an impact-protection agent which hardens on impact in order to absorb and disperse shock away from the encased device. One of these cases is the new Impact Mesh case for the iPad mini, a seemingly simplistic slim TPU case that's more drop protective than any ordinary slim TPU style case. And as you can tell straight away, the Impact Mesh case is also Smart Cover-compatible. As cool as Tech21's D3O might sound, is it really worth spending $40 on? Let's find out.