packed

Put into a package.

packed lunch

Filled with a large number or large quantity of something.

packed with goodness

[…] St. Bede's at this period of its history was perhaps the poorest and most miserable parish in the East End of London. Close-packed, crushed by the buttressed height of the railway viaduct, rendered airless by huge walls of factories, it at once banished lively interest from a stranger's mind and left only a dull oppression of the spirit.

Filled to capacity with people.

The bus was packed and I couldn't get on.

On a steamy summer late afternoon the Luzhniki was once again packed. It is a vast space, with a roof that almost closes in on itself capturing the air like a superheated bubble.