The Lock & Lock 5 piece Rectangle Container set is transparent which makes it easy to view the contents inside. It includes 350ml/ 470ml/550ml/850ml/1.1lt containers. The Container set is a great way to store and save various foods to keep it fresher for longer. The size of the Container set makes it perfect for storing snacks, treats and food. A great way to organise items around the house. These containers have Silicone seals and a four sided locking mechanism which makes the containers air and liquid tight.