トヨタ アクア | アクセサリー | 室内・インテリア | トヨタ自動車WEBサイト First column, between the sunshade and the door courtesy light. The floorboard raises the floor by 70mm (and reduces the height difference between the floor and the folded down seat backs). It look slike there are two small storage spaces on either side of the tool kit. Alternatively, there's this Which looks like a box that can be flattened and doubles as a nylon mat. (bottom right depiction)
