"Hatch" etched card case was designed to take advantage of the innate properties of brass and its remarkable ability to self sterilize. Within a few hours of contact with the brass ions, any bacteria or microorganism dies. While this effect is not new and the concept is centuries old, we don't currently utilize this materials enormous potential. This antiseptic quality lends itself perfectly to situations where hygiene is a priority, including the medical profession. "Hatch" was designed by Brooklyn based designer Karl Zahn.