what is on nikitas arm strictly

Nikita Kuzmin, a professional dancer on Strictly Come Dancing, wears a white patch on the back of his arm called a flash glucose monitor or Libre sensor. This device is used to monitor his blood sugar levels and is commonly used by people with Type 1 diabetes. Nikita has been praised for revealing the monitor during his performances on the show, with fans thanking him for normalizing the use of such devices.