Why is the glass bottle held in a place inside the metal case with the help of cork pieces?

The glass bottle is held in place inside the metal case with cork pieces to provide cushioning and prevent movement during transport or handling. Cork is a lightweight, flexible material that absorbs shocks and vibrations, reducing the risk of breakage. Additionally, the cork creates a snug fit, minimizing the likelihood of the bottle shifting or rattling, which further protects its contents.