We found one dictionary that defines the word half-sizes:

General (1 matching dictionary)

1. half-sizes, half-sizes: Collins English Dictionary

(Note: See half-size as well.)

Definitions from WordNet (half-size) ▸ adjective:  half the usual or regular size ▸ Also see half-size ▸ Words similar to half-sizes ▸ Usage examples for half-sizes ▸ Idioms related to half-sizes ▸ Wikipedia articles (New!) ▸ Popular nouns described by half-sizes ▸ Words that often appear near half-sizes ▸ Rhymes of half-sizes ▸ Invented words related to half-sizes