Heavy or not Riddle

Puzzle of the Day 2105 : Heavy or not Riddle
5 second puzzle – Presence of mind

Puzzle 2105 thinkwitty.com - Heavier or not Riddle

Yesterday I started wondering.
There is something that is lighter than air. But
a million men cannot lift me up
or put it down

What is it?

The answer will be posted soon. Click here to get the answer right into your mailbox.