The problem with most storage containers is that they take up precious cupboard space when not in use and usually require the lids and bases to be stored separately - which make finding and pairing both elements a hassle. All this is solved though with the unique stacking design of Nest Lock as the container bases nest neatly inside each other and the lids clip conveniently together. As each element is colour-coded too, it's very easy to match lids with bases when you need them. These multi-size sets are ideal for storing a variety of leftover food in the fridge or freezer, without the risk of leaks. All Nest Lock containers feature lockable, airtight and leakproof lids and are dishwasher, microwave & freezer safe, as well as being BPA free. All containers and lids also nest together, regardless of size, so you can mix and match to build a collection that perfectly suits your needs.