As the neutral carrier particle of the weak nuclear force, Z BOSON is even heavier than his W siblings. Z Boson is also part of the Boson 5-pack. Think of him as a more robust, orthagonal photon.
Z Boson is a heavyweight particle plush but also comes in a lightweight shipping saver version which is especially nice if you live outside the U.S. So if you prefer it to be filled with lightweight stuffing, just choose that option at checkout and it will only weigh in at 2 oz. Of course you won't get the full effect of its Z Boson massive weightiness but it will be the same in every other way.
Approximately 14 oz (397 gm); 4.5 inches (11 cm) across.
For ages 5 and up as it contains glued-on/small parts.