It continues Gen2 child resistant lock with a square shape. The rolled inside lid matches the rolled inside botom to form a smooth appearance, the back hinged area matches the front slot area to form a stable child resistant mechanism. Comparing the larger Gen2 tin, there is only one slots on the bottom because of the shorter side. Smaller tin size achieves the portable character, hidden child resistant lock increase the attractive appearance, square tin shape brings the classical impression, the hinged lid keeps child resistant lock working well. Except for this tin size, 65mm, 105mm, 108mm could be the other options for mints or gummies packaging.