I don't do centimeters. I don't understand them, so I couldn't vote, but the decks that are perfect for my hands are Wickwillow, Hanson Roberts, Halloween in a tin, etc. I overhand shuffle those usually, although I can riffle cards Morgan Greer size at pretty much the max. Lo Scarabeo decks like the Pirate Tarot, Sacred Sites, and their other decks of that size I can riffle.
I absolutely do not like thick card stock. It's like shuffling floor tiles. If they're a larger size, I can't overhand them OR riffle them and I don't like to "smoosh around" shuffle. The Gilded Reverie Lenormand and the Bonefire Tarot I overhand shuffle just fine. Any that are bigger than that I can't.
To answer the question---my hands are very small.