大だいサイズ

noun, noun which may take the genitive case particle 'no'

large size

Refers to something being of a large size, often used in product descriptions or when specifying dimensions.

• このTシャツの大だいサイズはありますか？

  Do you have this T-shirt in a large size?

• 大だいサイズのスーツケースを買かった。

  I bought a large-sized suitcase.