So a couple things about this particular light stick. First, it's aesthetically pleasing. Basically looks like a royal crown in gold, and at the moment, it is assumed to be called the 'Orbit Crown'.
And the other thing that you might need to know is just how big it actually looks. One can't help but forgive anyone from falling in to the temptation to misuse this particular light stick.
The length of this item is said to be approximately 43 cm (1 foot 5 inches) long.
Below are photos for reference.
— 이달의 소녀(LOOΠΔ) (@loonatheworld) June 16, 2020