Dimension question

I've been thinking it's time for a larger plug. (Actually, I have a larger plug, the Severin Large:


but I haven't managed to fit it in yet!) I'm interested in the Ringo:


The Lovehoney page lists the diameter of this toy as 2.2", which is about as big as I'd want (for now). But Tantus's own page lists the diameter as 2.5" -- even bigger than the Severin. Could someone with a caliper please provide a measurement check? TIA!

Try posting this question here or finding another thread.