Stackable cups and lids for easy storage. Leak proof, twist-on lid for safe storage in the fridge or freezer. The outer tread twist-on lid ensures a secure seal and no leakage. Protect breast milk by expressing, storing and feeding from the same container. No need to transfer breast milk. Write-on cups and lids so that you can conveniently track dates and contents. Product features: BPA Free Dishwasher safe
