Custom designed Scentbird cases in white, black, pink and grey. I always had issues with my cases from scentbird and wanted to just design one but better. These have a window so you don't get confused about what scents you have in there, they are magnetic, and interchangeable so you can mix and match fronts and backs however you want. To me it addresses all of the issues the oem scentbird case problems. magnetic, interchangeable, scented, customizable, window, minimalist, modern, sleek, bold, versatile