Serenity Classic Underpads 80*180 cm also called Serenity Classic Traversa 80*180 has a layer of soft nonwoven on a cellulose layer coupled with a soft non-woven fabric layer and with an external non-slip polyethylene coating that forms a valid barrier to the passage of liquids. They are latex-free, to protect allergic users and to avoid the onset of contact dermatitis.