From the article:

The new Barbie wears continuous glucose monitor (CGM), a device that tracks blood sugar levels, on her arm — while holding a phone displaying an accompanying app. She also has an insulin pump attached to her waist. And the doll carries a blue purse that can be used to carry other essential supplies or snacks on the go.

The Barbie’s outfit is blue, too — with polka dots on a matching top and skirt set. Mattel says that this color and design are nods to symbols for diabetes awareness.