From the website:
Feminine and fitted (but not shrunken), our newest blazer is sharp and sleek with clean lines, a popped collar and a slightly longer length. It instantly pulls together any outfit and doubles as a jacket on those chilly-but-not-quite-cold mornings.
Wool with a hint of stretch.
Functional buttons at cuffs.
Petite 0 (XXS)
J.Crew Navy Regent Blazer JBMRFLZ