Medela’s Quick Clean™ Micro-Steam™ bags are great for work, travel and end-of-day cleaning to disinfect breast shields, accessories, breast milk bottles, nipples, pacifiers and more. Steam cleaning is most efficient way to clean your breast pump and accessories (in addition to cleaning): steam cleaning eliminates 99.9% of most common bacteria and germs. Medela Quick Clean Micro-Steam bags allow you to sterilize breast shields, accessories, breast milk bottles, nipples, pacifiers, and more in three minutes or less, without boiling water. The Micro-Steam bags are great for work, travel and end-of-day cleaning!