A vintage 1940s playsuit set -- it's a "Trik-Combo" set by Koret of California. The top ties at the bust, neck, and back. The shorts fasten with side buttons and also have a cinchable waist tie. The fabric feels like cotton twill and has a yellow and brown plaid print on a white background.
Size: approximately size small, but will work for xs/s to s/m
Bust: pretty flexible because of the ties, but best for the size range above
Waist: 27" (will cinch a bit smaller--probably best for 25-27" waists)
Short length: 16"
Condition: Very good. Slight yellowing in places that is faint enough I couldn't get it to show in photographs. The suit has been cleaned.