A smidge over five ten here and went with a 16" as per Brants suggestion as well – absolutely perfect – plenty long enough tt length and loads of standover. Cracking bike!
Pinches – I’m around the 5’10” mark and ride a large with a 70mm stem – feels spot on for me – the medium came up a wee bit short in the top tube department.
Best to try both sizes if you can, but as Pedalhead says, they do size up a little smaller.
Nice one there binners! Just 5 minutes you say? Well there’s hope for my 5 year old then – mind you, if she’s anything like her dad, I have a funny feeling it will take her somewhat longer to get it dialled!!!!