Use these FoodSaver Preserve & Marinate Vacuum Containers to lock in freshness and seal in flavor, with 2 different settings to choose from. Turn the valve to Vacuum Mode and attach to a handheld sealer (sold separately) to help keep food fresh in the freezer, fridge, and pantry. Or switch to Marinate Mode to marinate meat, fish, and veggies in minutes instead of hours. These convenient FoodSaver containers nest and stack to help keep your kitchen organized and are designed with premium Tritan material for extreme durability, so they won't crack or stain. These containers have a long-lasting vacuum seal, a flexible lid with easy-open tabs, and are dishwasher-safe for easy cleanup. They're compatible with all FoodSaver vacuum sealer systems.