BPA-free vacuum sealer bags designed to work with the Zwilling vacuum pump (sold separately) to keep food fresh up to five times longer than non-vacuum storage Includes 30 small food storage bags that are perfectly sized for holding pre-prepped recipe ingredients, sandwiches, or fresh fruit Easy-zip closure ensures a tight seal and no spills, and the included liquid barrier helps to ensure liquids aren't absorbed by the vacuum sealer food pump Cook meat sous vide or marinate meat for the grill in just 30 minutes in the vacuum bags and containers Food storage bags feature a sealing valve to connect with the vacuum sealer pump