A flexible pressure mapping device (1) comprising flexible upper sheet and lower sheet facing one another with a flexible middle sheet between the upper sheet and the lower sheet, force sensors (10) with upper electrodes on the upper sheet and lower electrodes on the lower sheet separated by the middle sheet, control and transmit electronics (14) electrically connected to electrodes by conductive leads (11). The upper sheet comprises upper openings (70) and the lower sheet at least partially overlaps at least one of said upper openings (70)