<ul><li>Detachable silicone sealing ring enclosed. The caps securely seal Avent wide mouth bottles for travel and storage of formula or breast milk.</li><li>Compatible for the standard 4 ounce and 8 ounce Avent wide mouth bottles.</li><li>Dishwasher top rack only and can be sterilized in boiling water.</li><li>BPA Free. DEHP Free,Lead Free</li><li>This is an aftermarket product produced by Mingjing, not associated with Avent.</li></ul><br><br>Travel and Storage Baby Bottle Caps Compatible for Avent Wide Mouth Bottles, 4 Count

4-Pack Baby Bottle Lids,Screw Lid,Travel and Storage Baby Bottle Caps Compatible for Avent Wide Mouth Bottles,Cap Replace Avent Natural Bottle Sealing Ring and Sealing Disc