What the thing is
A lightweight sports jacket. Traditionally navy or striped wool or linen. Structured. Often double-breasted. Defined by contrast: sportswear made formal, uniform made wearable.
Where it came from
Two sources in the 1830s–1860s: HMS Blazer’s blue-and-white striped jackets (1837), and the scarlet flannel boating jackets of St John’s College, Cambridge’s Lady Margaret Boat Club (founded 1825, jackets worn from at least the 1860s). It descends from the naval reefer jacket.
What it gets right
It establishes clear visual hierarchy. Double-breasted cuts, brass buttons, structured shoulders signal authority without speech.
What it gets wrong
It pretends neutrality. The blazer never shed its origins in elite collegiate sport or naval command. Its adoption by women in the late 2000s did not erase that lineage—it repurposed it.
Why it matters now
Because it is still being weaponised—by schools enforcing conformity, by brands selling ‘power dressing’ to women, by mods reviving stripes as anti-establishment shorthand. Its grammar remains legible, even when its syntax is rewritten.
Is it worth your time
Yes—if you care how a garment named after a naval gig crew became a vessel for class, gender and subcultural signalling.
