noun
jumbo-size
Refers to an extra-large size of a product, portion, or item, often used in commercial contexts like food, drinks, or packaging.
映画館でジャンボサイズのポップコーンを買った。
I bought a jumbo-size popcorn at the movie theater.
Lサイズ is a standard large size, whereas ジャンボサイズ implies an even larger, often promotional or exaggerated size.
Loanword from English 'jumbo size', combining 'jumbo' (large) and 'size'.