Microfiber Overnight Insert consists of 6 layers of super thirsty microfiber made to fit with any Regular insert option of the same size. Snap overnight insert into cover then snap regular insert of your choice on top. Wash once before use. 

Small: Birth - 14 lbs (Stitch Color: Green)

Medium: 11 - 22 lbs (Stitch Color: White)

Larger: 16 - 35 lbs (Stitch Color: Blue)