"Large chocolate ball [peanut]" is a sweet that uses large peanuts and has a volume 2.5 times that of normal "chocolate ball".
2.5 times!

Morinaga & Co., Ltd. will release "Otama Chocolate Ball [Peanuts]" and "Same White" on February 20th, ahead of convenience stores and rail routes. The price is 173 yen (tax included).

This is a sweet that uses large peanuts and has a volume 2.5 times that of a normal "chocolate ball". Two types are available: "Large chocolate ball [Peanut]", which is made by wrapping large peanuts in a crisp layer and coated with chocolate, and "Large chocolate ball [Peanut] White", which is coated with white chocolate that goes well with peanuts.

"Large chocolate ball [peanut]" is a sweet that uses large peanuts and has a volume 2.5 times that of normal "chocolate ball".

Also, it seems that there may be a rare golden "golden chocolate ball" in it. Why don't you look for it?