These silver bracelets are called Gate Bracelets because of the design. So popular in the U.K. and now I am finding they are popular here also, I sell a lot of these. This one is wide, a full one inch and will fit an 8 inch wrist. Fully hallmarked showing it was made in London in 1976, the heart is the closure and opens by clicking on one side. The safety chain goes right through the link on the heart - should it open you won't lose it.