Among the source's coffee factoids is the development of valve-equipped coffee packaging. A one-way valve is used to allow gases released by roasted coffee to leave the pack while limiting reverse airflow through that opening. It is a functional part of a package, not proof that the coffee was recently roasted or stored perfectly.
Read the roast information and consider the whole bag, including its seal and how it will be closed after opening. A valve cannot undo poor handling or make an oversized supply match a household's rate of use. Similarly, the presence or absence of one visible feature does not provide a complete comparison between different packaging designs.
Buy a quantity you can use realistically and follow the seller's storage guidance. If evaluating two coffees, record their roast and opening dates rather than judging freshness from the bag's appearance alone. Packaging is useful when it supports the product's handling. It should not become another impressive-looking detail that replaces clear information about the actual coffee.
The conversation
A good question can make a better brew.