Essence collection is the design for everyday use, simple and easy to go with anything.
It is a solid thick ring with open-ended design. The ends are filed as the square shapes to have the contrast with the round shape of the ring, as well as the shiny-finished on the ends in contrast with the brush-finished on the ring. It is an unisex design for both men and women to wear on a daily basis.
Although it is open-ended, it is not for adjusting as the band is thick and solid. So it is best to choose your normal ring size for this model.
To measure the ring size, please see the reference here.