lighter than a feather
Fixed comparative idiom
This backpack is lighter than a feather, you barely notice it.
—Is the package heavy? —No, lighter than a feather.
With the new material, the helmet is lighter than a feather.
This backpack is lighter than a feather, you barely notice it.
—Is the package heavy? —No, lighter than a feather.
With the new material, the helmet is lighter than a feather.