No need for sterilization or washing with the bottle inner bag. - Quantity: 20 bags x 1 + remaining (probably about 10 bags) - Purpose: Bottle inner bag - Features: No need for sterilization or washing - Manufacturer: Kaneson ✽ Thank you for viewing. I am selling baby clothes that are outgrown. I will consider bulk purchases, so please feel free to ask! Also for expectant mothers and those preparing for childbirth! #newborn #expectantmother #preparingforchildbirth #breastfeeding