Starbucks Charlotte Ronson Double Wall Ceramic Traveler Limited Edition Starbucks has paired up with designer Charlotte Ronson to bring you an artful twist on our popular Double Wall Ceramic Traveler, featuring a hand sketch and floral prints from her Spring 2013 collection. The double wall construction helps keep hands cool and drinks warm, and the coffee tumbler's press-in lid with slide opening minimizes spills when secured properly. Siren logo and "Starbucks + Charlotte Ronson" on side. No-slip grip pad on bottom. Holds up to 12 fl oz. Hand wash only. Do not microwave.