Item name:Waterproof Reusable Washable Sanitary Pads<br /><br />Package Includes: 4 pcs (1 piece for each size).<br /><br />Material:<br />upper layer : l layer of soft and smooth charcoal bamboo against your skin，they are naturally deodorising， breathable and antibacterial <br />inner layer : 1 layer of microfiber for S， 2 layers for M and L ，3 layers for XL ，they are super absorbent.<br />outer layer : 1 layer with a waterproof PUL backing to prevent leaks.<br /><br />4 Size: S - M - L - XL<br />S : 21cm¡Á8.5cm (panty liner)<br />M : 26cm¡Á9cm   (regular/light flow)<br />L : 32cm¡Á11cm  (heavy flow)<br />XL: 36cm¡Á10cm  (overnight or post partum)<br /><br />Secure: The wings have 1 snap set allowing them to be clipped around underwear for extra security.