AMMA is the first FDA approved Portable Scalp Cooling System. It also does not require dry ice like other devices, so the Portable Cooling Unit only weighs about 25 lbs, making it much lighter and easier to move around. Because of this, AMMA allows chemotherapy patients the freedom to self-administer scalp cooling therapy at any location, independent of your treatment center. AMMA also does not require any assistance from the medical staff at your facility.