Product highlights: • Extra bottles are compatible with all Medela breast pumps, as well as calma, for pumping directly into the bottle • Safe plastic made without BPA, designed to retain breast milk's beneficial properties • Ideal for safe storage of breast milk in refrigerator or freezer • Screw on lids for leak-proof storage, travel and freezing • A Quick Clean Micro-Steam Bag is also included in the package • Dishwasher and microwave safe Many Moms want to have extra breast milk bottles on hand to meet their growing and changing breast milk supply. Medela’s Breast Milk Collection and Storage Bottle Set is a perfect complement to your breastfeeding experience. Compatible with all Medela breast pumps and Calma, making it easy to pump, store and feed into the same container. • Ideal for safe storage of breast milk in refrigerator or freezer • Safe plastic designed to retain breast milk’s beneficial properties • Measure the exact amount of milk you''re pumping with the colorful ounce and millimeter markers • Screw on lids for leak-proof storage, travel and freezing • Dishwasher & microwave safe • Made without BPA • Contains: 6 x 5 oz/150 mL bottles, 6 x solid lids, 1 x Quick Clean Micro-Steam Bag https://youtu.be/8XBd9Fw1Vmo