Acrylic "Beer Filled" Frosty Freezer Chiller Cold Mug - 13oz. Capacity Whether you are or aren't, this Mug always looks like you are drinking Beer. Empty or full, upside down or rightside up; this Mug always appears to be filled with Beer. Frozen cold or thawed warm, it still looks like it's full with Beer. Double wall acrylic construction contains the non-toxic, amber colored freezer liquid. Even the "beer bubbles" are emulated by small frothy beads that float to the top.