Toyland Amscan Super Shape Frozen Foil Balloon, Blue, 63 cm x 78 cm, 2816201

How much helium do I need to fully inflate the balloon? (maybe 3.25 cubic ft? I might be way off...)

what is this?

Do these baloons have that "anagram" rainbow logo actually on them or is it just in the images on amazon?

does it comes infated?