Product Details Lansinoh'S Breast Milk Storage Bags Are Super Strong For Storing, Protecting, Freezing, And Thawing Precious Breastmilk. Our Breast Milk Storing Bags Are Pre-Sterilized With A Double Zipper Seal And Double Side Seam To Help Prevent Leaks While Freezing And Thawing Mom'S Liquid Gold For Baby. Pump Directly Into Our Breast Milk Collecting Bags With Lansinoh Pumps Or By Using Our Pump Adapter With Most Major Pump Brands. Bags Hold Up To 6 Ounces Of Breastmilk And Have An Easy Write Label For Better Tracking. Each Bag Can Be Stored Upright In The Fridge Or Laid Flat In The Freezer For Extra Flexibility. Lansinoh Has Been Helping Moms And Babies Get A Good Start To Their New Lives For Over 35 Years. We Offer A Variety Of Breastfeeding Essentials Including Lansinoh Lanolin Nipple Cream, Lansinoh Disposable Nursing Pads, Washable Nursing Pads, Lansinoh Breastmilk Storage Bags, Manual And Double Electric Breast Pumps, Nipple Shields, Plastic And Glass Baby Bottles, Nipple Cream For Breastfeeding Organic, And Other Therapy Products. Lansinoh Breastmilk Storage Bags For Breastfeeding Moms, 100 Ct Prevent Leaks: Our Double Zipper Seal And Double Side Seam Make Our Breastmilk Storage Bags Super Strong Lansinoh Compatible: Pump Directly Into Each Breastmilk Storage Bag With Any Lansinoh Pump Works With Major Pump Brands: Use Our Pump Adapters With Most Brands Of Breast Pump Easy To Use: Our Breast Milk Bags Have A Write On Label And Convenient Pour Spout Safe For Mom And Baby: Each Breast Milk Storage Bag Is Bpa And Bps Free #1 Selling Brand: Lansinoh Is The #1 Brand In Breastfeeding Supplies And Breast Milk Storage Bags In The Us