2014 Giant Revel seatpost size

OK, strange question, anyone know the diameter of a 2014 Revel's seatpost?
I am hiring one but have never got on with the Giant saddles so plan on taking my own, so figured I may as well leave it on the seatpost (27.2) and get a shim, as I recall Giants are an odd size, 30.9 or 31.6 springs to mind, of course all the Giant webby says is "Seatpost: Giant Aluminium"!
I am hiring one but have never got on with the Giant saddles so plan on taking my own, so figured I may as well leave it on the seatpost (27.2) and get a shim, as I recall Giants are an odd size, 30.9 or 31.6 springs to mind, of course all the Giant webby says is "Seatpost: Giant Aluminium"!
Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
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Posts
Giant Anthem 27.5 SX
Giant Defy Advanced Pro 1
Cannondale Chase
There's quite a wide range of giant saddles though.
Giant Trance
Radon ZR 27.5 Race
Btwin Alur700
Merida CX500
At £5 for 24 hours they are a bit of a bargain!
Thanks everyone.