The Bracelets of Submission are worn by all Themysciran Amazons
They symbolize the years when the Amazons were subjugated under the rule of the treacherous Hercules. After gaining their independence, the Amazons continued to wear the bracelets as a reminder of their past oppression.
The inspiration to give Diana bracelets came from the pair of bracelets worn by Olive Byrne, creator William Moulton Marston's research assistant and lover.
In some parallel worlds, but not others, the bracelets are the key to Wonder Woman's main weakness
Wonder Woman and her sister Amazons have to wear heavy bracelets to remind them of what happens to a girl when she lets a man conquer her.
William Moulton Marston
In the Amalgam universe, Diana wields bracelets made of adamantium.
how did you do that?
In 2009's "Wonder Woman" #34 by Gail Simone and Aaron Lopresti, she learned that by clashing her bracelets together, she can summon lightning bolts straight from Olympus at her enemies
The bracelets have many origins
The bracelets are always made of metal, though some continuities they are steel, while in others they are made of Amazonium, silver, or Feminum. Recently, they have been said to be made of Eighth Metal.
In another origin, When Diana won the Contest to become Wonder Woman, she was given a pair of magical silver bracelets.
The bracelets were later explained as having been forged from the remnants of the Aegis, a shield made from the indestructible hide of the great she-goat, Amalthea, who suckled Zeus as an infant.
