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
White armour White armour An early type of alwyte armour; note that it opens from the back like a brigandine, so it could be considered as a late type of transitional armour White armour, or "alwyte armour", was a form of plate armour worn in the Late Middle Ages characterized by full-body steel plate without a surcoat. Around 1420 the surcoat, or "coat of arms" as it was known in England, began to disappear, in favour of uncovered plate. Areas not covered by plate were protected by mail sewn to the gambeson underneath. During the fifteenth century national styles of armour emerged.