Space saving stacking system-a range of different shapes and sizes ensures the most efficient use of space. Sistema patented easy locking clips and flexible seal helps food stay fresher for longer. For easy clean up, Sistema Klip it food storage containers and lids can go in the dishwasher top rack. They can also be stored in the freezer and easily microwaved to defrost and reheat. Sistema produces all of its products to an extremely high and diligent standard. All of our products come with the Sistema seal of approval allowing you to feel confident in the fact that your chosen product comes made to international standards, well presented in our branded packaging and extremely well packed.