Four (4) Clearly Marked Collection Bottles To Measure Collected Milk Volume, Up To 4 0Z/120 Ml Pump And Store In The Refrigerator For Upcoming Meals Or Freeze In The Bottle For Future Use Just Add Dr. Brownã¢ÂS Bottle Parts And Teat (Sold Separately) For Feedings Right From The Same Bottle Included Are Four (4) Storage Travel That Tightly Seal The Bottle, Making Storage And Transport Simple Dishwasher (Top Rack) And Sterilizer Safe For Easy Cleaning, Bpa-Free, 0M+