(as) light as a feather
US /əz laɪt əz ə ˈfɛðər/
UK /əz laɪt əz ə ˈfɛðər/

1.
leggero come una piuma, leggerissimo
extremely light in weight
:
•
The package was as light as a feather, so I could carry it easily.
Il pacco era leggero come una piuma, quindi potevo portarlo facilmente.
•
Despite its size, the sculpture was as light as a feather.
Nonostante le sue dimensioni, la scultura era leggera come una piuma.