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This study examines the significant role of the floor in contact cooling, which is passive cooling that happens through direct contact with the human body.It investigates the dynamic of the relationship between floor covering materials, mats, and thermal conditions, a topic that has not been widely explored.As a starting point, this study correlates thermal conditions and the use of mats in three highrise rental flats in Surabaya.Study results show that floor temperature tends to be higher than room temperature.The average room temperature is 30.61C, while the floor temperature reaches 32.20C on average.The widely used underlay material is polypropylene carpet with an average thickness of 4.234.99mm.In the context of a contact cooling process, floor covering materials act as both radiative and conductive cooling elements.Meanwhile, mats act as a thermal moderation whose condition can be adapted to match the occupants' behavioral patterns and preferences.