The Sistema Mini Bites To Go features stackable, seal-tight, screw top lids to keep your snacks fresh until ready to eat. This product is stackable and safe to use in the dishwasher (on the top rack), the microwave (without the lid), or in the fridge and freezer. * Easily stackable with similar containers * Top-rack dishwasher safe, microwave safe without the lid, and freezer safe * Set includes three 130-ml containers and lids