The problem with most storage containers is that they take up precious cabinet 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. With the unique design of Nest Lock, container bases nest neatly inside each other and lids clip conveniently together for efficient, space-saving storage. As each element is color-coded too, it's very easy to match lids with bases when you need them. All containers feature lockable, airtight and leakproof lids and are freezer, microwave and dishwasher safe.