This is the Kono Meimon Dripper - 2 Cup version. It's a special Japanese dripper that has smooth walls all around the top of the brewer, with ridges only on the bottom third. This gives a unique way of brewing and extraction, with a sort of "suction" effect at the bottom of the filter.
This one fits all Kono filter papers, especially in the 2 cup size, or Hario 01 size.
It comes in 3 colours, Black, Pink, or Crystal Pink. Please note that the Clear colours (like Crystal Pink) will visually crack with some use, it does not affect the performance in any way, and is purely cosmetic.