What's the significance of a promise ring?

Seems to be trending now #promiserings and annoyingly most ladies who wear it don't know what it symbolizes.
What is a promise ring?
It's a commitment to a relationship, it's a constant reminder or token by a man or woman towards his/her decisions to keep the sanctity of a relationship, for some it's a pre-engagement ring or can be called a commitment ring. Well, whatever you do, be sure not to wear any promise ring for too long to avoid stories that tickle and touch. Be wise Gurls.