BPA free. Leak proof. New. Click 'n' secure seal to prevent leaks. Ideal for storing & freezing breastmilk. Convenient pour spout. Patented double zipper seal. Strongest bag available. Lay bags flat for efficient storage and thawing of breastmilk. Convenient pour spout and self standing bag for ease of use. Patented double click 'n' secure - seal prevents leaks or spills. Outer write-on tab prevents ink contamination. Clearly marked measurements on bag and durability you can trust. Tissue pack dispenser with breastmilk storage guidelines for easy access and storage. When it comes to storing breastmilk, you don't want to take any chances. These are the only bags I'll use. - Lansinoh Mom. Join our Community: LansinohUSA; Feed: OnCloudMom.com; Facebook: Lansinoh.com; Twitter at LansinohUSA. Lansinoh.com. Made in Thailand.