Pump directly into Ardo’s Easy Freeze breast milk storage bags. The integrated heat indicator helps prevent overheating. Pre-sterilized and PVC-free. The hygienic chamber system protects your liquid gold from contamination. The premium-quality, FDA-tested double coating protects against odors. Graduated up to 180 ml with double zip, leak-proof fastening. A filled bag will stand on its own. 20 breast milk storage bags (PVC- free, pre-sterilized) including 2 reusable fastening strips, an integrated heat indicator.