Your bangle size is determined more by the size of your hand than your wrist.
To find out your bangle size, simply tuck your thumb into the palm of your hand (as if about to put on a bangle) and measure the width of your hand from knuckle to knuckle. This will give you the diameter.
Now measure around your wrist as loose or tight as you would like the bangles to fit and this will give you the circumference.
Small = inner diameter is 2 1/2 inches
Medium = inner diameter is 2 5/8 inches
Large = inner diameter 2 6/8
These are two medium sterling silver bangles.
Made with Sterling Silver wire of which one has been hammered and the other has been twisted.
Both have been hallmarked.