An interlabial pad, which is fitted between labia and absorbs menstrual
blood and other body fluids, and a surface side sheet used in this
interlabial pad are presented. The surface side sheet is used in the
interlabial pad that is fitted between labia and has a fiber aggregate
having a wet shear strength with respect to labial inner walls of no less
than 15 cN/25 mm and no more than 60 cN/25 mm when containing an
artificial menstrual blood at a content of 800%. The artificial menstrual
blood being a fluid composition includes water, glycerin, sodium
carboxymethylcellulose, sodium chloride, sodium bicarbonate, and a food
dye preparation. Even when the shape of the labia changes because of
movement of a wearer in a highly wet state after absorption of menstrual
blood, since the shear force that arises between the labial inner walls
and the interlabial pad can be resisted, positional deviation and falling
off of the interlabial pad can be prevented. The interlabial pad can thus
be fitted securely between the labia even without using an adhesive
agent.
