This storage container set features conjoining 650ml and 230ml containers, with handy cutlery, perfect for lunch on the go or keeping salad dressing separate from salad Unique locking system making these boxes reliably 100% leak-proof, making for a mess-free lunch on the go Heat resistant wings that stay cool when your food is hot making this container easy to retrieve from the microwave All push & push boxes are long-lasting and made from non-toxic BPA free plastic, so you can be reassured that no nasty chemicals will be transferred to your food and that the plastic used is sustainably sourced Microwave, dishwasher and freezer safe.