Another vote for size 17! My wrist is 14.5 cm and I have one in size 17. The size 16 felt like a hand cuff on me, kind of like i was wearing a thick rubber rather than a bangle. The SAs at Cartier all agreed that 16 was too snug. Also, I like how I can push it up my arm a bit when I type and the fact that it moves when I move my arm - it makes the bangle look more 'alive'.