(as) light as a feather
US /əz laɪt əz ə ˈfɛðər/
UK /əz laɪt əz ə ˈfɛðər/
1.
extremely light in weight
:
•
The package was as light as a feather, so I could carry it easily.
•
Despite its size, the sculpture was as light as a feather.
extremely light in weight