Small = UK Size L - EUROPEAN 51 - USA L - 16.3 mm
Medium = Size 0 - EUROPEAN 55 - USA 7.5 - 17.5 mm
Large = Size S - EUROPEAN 60 - USA 9.5 - 19.1
XL = Size V - EUROPEAN 64 - USA 11 - 20.3
Handcrafted in Turkey with a 22ct gold plated band.