The Zaku IMPRESSION Collection is a reflection of the innovative attitude of Seizaburo Shimizu. The collection is complete with all 4 models. "M", "G", "H" and "N". The names are taken from the first letters of "Keinochi", "Gennochi", "Hotanochi" and "Nakazato" respectively. The direct-draw version of each product is called "Maki-impression". It is a direct-draw version in which the sake is squeezed into the bottle without being returned to the barrel for storage. The "G" in IMPRESSION-G is derived from the "G" in "Gen no Tomo".