Abstract: A vehicle seat supporting body has padding which has a honeycomb body of elastic material and is covered with upholstery permeable to air and defining a user supporting surface; the cells of the honeycomb body extend along axes crosswise to the supporting surface, are open at the ends, and, in use, vary in volume in response to oscillating movement of the user; on the opposite side to the supporting surface, at least one opening connects the cells to the outside, and is opened/closed automatically by valves in response to compression and decompression of the air in the cells.

Abstract: A seat portion of a vehicle seat has a padding, which is covered with permeable upholstery defining a user supporting surface and has a plurality of chambers extending crosswise to the supporting surface; the chambers are open at their ends and, in use, vary in volume in response to oscillating movement of the user; the chambers are grouped in at least four groups, which are located, respectively, in front right, front left, rear right, and rear left position; the chambers of each group are isolated in fluidtight manner by the chambers of the other groups and communicate with a respective opening, which connects the lower end of the chambers to the outside; the opening of each group is associated with a respective valve, which operates independently from the valves of the other groups and is opened/closed automatically in response to compression and decompression of the air in the chambers.

Abstract: A seat body for vehicles has a padding made of plastic material foam and provided with through holes; the padding is covered by an upholstery covering having a fabric layer and a hygroscopic layer, which are heat-fixed together; the fabric layer defines a support surface for a user, while the material of the hygroscopic layer is an open-cell polyurethane foam having a cell mean linear density less than or equal to 15 cell/cm.

Abstract: A seat portion of a vehicle seat has a padding, which is covered with permeable upholstery defining a user supporting surface and has a plurality of chambers extending crosswise to the supporting surface; the chambers are open at their ends and, in use, vary in volume in response to oscillating movement of the user; the chambers are grouped in at least four groups, which are located, respectively, in front right, front left, rear right, and rear left position; the chambers of each group are isolated in fluidtight manner by the chambers of the other groups and communicate with a respective opening, which connects the lower end of the chambers to the outside; the opening of each group is associated with a respective valve, which operates independently from the valves of the other groups and is opened/closed automatically in response to compression and decompression of the air in the chambers.

Abstract: A vehicle seat supporting body has padding which has a honeycomb body of elastic material and is covered with upholstery permeable to air and defining a user supporting surface; the cells of the honeycomb body extend along axes crosswise to the supporting surface, are open at the ends, and, in use, vary in volume in response to oscillating movement of the user; on the opposite side to the supporting surface, at least one opening connects the cells to the outside, and is opened/closed automatically by valves in response to compression and decompression of the air in the cells.

Abstract: A seat body for vehicles has a padding made of plastic material foam and provided with through holes; the padding is covered by an upholstery covering having a fabric layer and a hygroscopic layer, which are heat-fixed together; the fabric layer defines a support surface for a user, while the material of the hygroscopic layer is an open-cell polyurethane foam having a cell mean linear density less than or equal to 15 cell/cm.