Tatami (Japanese armour) the other related parts of a full suit of Japanese armour. Collapsible head protection such as "" and other collapsible armor are also "tatami" armor; a traditional kabuto could also be part of a tatami gusoku. Tatami armour was lightweight, portable, convenient for transportation, and they were manufactured inexpensively for the ashigaru light infantry. Tatami armours were worn by all samurai classes from the highest class to the lowest class. The higher class samurai wore elaborate armour while the lower class samurai and retainers wore simpler versions. In his book "Arms and Armor of the Samurai: The History of Weaponry
Auxiliary armour (Japan) Auxiliary armour (Japan) Auxiliary armour in a set of Japanese armour are optional pieces worn by the samurai class of feudal Japan in addition to the traditional six armour components. The six major articles or components of Japanese armour ("hei-no-rokugu, roku gu, or roku gusoku") are the dou or dō (chest armour), kabuto (helmet), mengu (facial armour), kote (armoured sleeves), sune-ate (shin armour), and the hai-date (thigh armour). Additional armour protection was available for the neck, armpit, chest, waist and feet. These auxiliary armours covered areas of the body that were exposed by gaps in the regular armour items or