Support body of a seat for vehicles

摘要

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.