PUPPI SIO is a Snap in One System of wool covers and absorbent inserts ready to be snapped into the cover. SIO System lets you change a dipaer fast and easy.
These very absorbent 4-layer SIO S inserts act as a highly absorbent booster for any OS diaper.
This insert can be used in a cover by itself or be snapped in with other sizes.
Best choice for heavy wetters.
Cotton booster will give you extra absorbency whenever needed.