Those are big ones!
Wow, those incredibly huge!
I cannot believe how large that!
Oh wow, look at those! They are massive!
Would you just look at how big that are!
Unbelievable! That are staggeringly huge!
That must be some of the hugest items I've ever seen!
Those are monstrously big!
That are unbelievably huge that I am in awe!
That give a whole new meaning to the word "huge!"
You won't believe how enormous that!
Those are ridiculously small in comparison!
Those are absolutely enormous!
That are undoubtedly the largest ones I've ever seen!
I am speechless by the sheer enormity of that!
That deserve the title of "astonishingly gigantic!"
Goodness, that are mind-bogglingly large!