Keep your sips to yourself with Brumate's   Era Magnetic Straw Covers .   These innovative caps are equipped with a clever magnet that lets them perch on top of your Era lid. So, when you're not  mid-sip, just flip it, stick it, and store it. Also compatible with MultiShaker Straw Lids. Warning: Choking Hazard - small parts not for children under 5 years or any individuals who have a tendency to place inedible objects in their mouths.