This easy-sip sports lid fits snuggly onto Mini Montii. But just in case yours ever runs off, we've got plenty in stock to send out a replacement. Oh and FYI, the sports lid and bamboo lid can be used interchangeably. THE ALTERNATIVE MONTII LID (SPORTS CAP) IS NOT SUITABLE FOR USE WITH HOT LIQUIDS. Not suitable for use by children under the age of 3 without adult supervision