Boss Lady Gifts - Large 12oz Wine Tumbler/Mug - Funny Gift idea for Girl Boss, Boss Babe, Women Bosses, Lady, Female, Office, Appreciation DOUBLE WALL VACUUM INSULATION: Keeps beverage at the perfect temperature (hot or cold) for a long time. Can be used for anything from wine or juice to coffee or tea. 18/8 STAINLESS STEEL & BPA FREE: Made from 18/8 food grade stainless steel, this tumbler is unbreakable, rust resistant, doesn't transfer flavor. Comes with a clear BPA-free lid SPILL RESISTANT & PORTABLE: Clear, push on lid makes this cute novelty tumbler ideal for everyday use, indoor and outdoor events, parties, camping, tailgating, weekends by the lake or evenings at home 12 OZ capacity is the perfect size to hold your favorite beverage and fit in your hand.