This 3-in-1 can-cooler holds 16oz, includes a freezable adapter for 12oz cans and converts into a 100% leakproof pint tumbler. 16/12oz Can-Cooler & Tumbler BevLock™ Leakproof Lid Every Sip, Ice-Cold Push-Lock™ Gasket Cup Holder Friendly Fits: All your favorite 16oz cans All your favorite 375ml & 500ml All standard 12oz cans Miller Lite & Coors Lite 16oz cans and aluminum bottles Does not fit slim cans or 12oz Coors cans.