This silver bangle is round on the outside but oval on the inside which makes two sides of the bangle wider. The top edge of the bangle is flat and 4mm across and this flattened edge and the two thicker sides give the bangle a substantial look. If you are after a sterling silver bangle that is a bit different to your normal round bangle, our Big O bangle is perfect. The bangle measures 69mm x 57mm across on the inside and the wider sides are 11mm and the ends 5mm across. This is a medium to large size bangle. The bangle is hollow and therefore fairly light and comfortable to wear.