The Seni Soft Super Dry Hygenic Underpads provide additional protection for keeping your bed and linens clean. The absorbent core is made up of cellulose pulp and contains superabsorbent microbeads that soak up the moisture. The outer layer is made of impermeable anti-slip film that not only prevents leaks but helps keep the underpad in place. The surface of the underpad is soft and nonwoven for the comfort of the user. It is great for extra protection for changing briefs or for brief leakage.