PVA Sponges looks like a solid sponge but on the microscopic level it is has interconnected hollow cells and 90% of the volume is air. They are more absorbent than regular sponges and even long lasting too. It has highly absorbent porous material which absorbs aqueous solutions easily. It expands when wet and compresses when dry and has excellent resistance to most chemicals.
PVA Sponge can hold up to 12 times its dry weight in water and can withstand temperatures ranging from 70-degree C to 100-degree C dry. Finer the cells better the capillary action, cell size varies depending upon the use.