It's a venti!!

When I visit Starbucks, I saw there is venti mug for showing size.
I grab it. it's too Big! make me fun.
(My hands are pretty small.)
I can't imagine how big trenta mug.
Well, I rarely go to Starbucks and usually order tall size drink.
Sometimes small is enough for me.
I think there is no time to use trenta mug.