All products in the Nest Lock range work together so you can build your own collection to suit your needs, whether it be for fridge/freezer storage, batch cooking or family lunch boxes. All containers feature lockable, airtight and leakproof lids. Lids and containers dishwasher safe (top rack only). Microwave safe (for reheating purposes only). Before using in a microwave, remove lid and place loosely on top of container - do not close lid.Use caution when removing container from microwave as it may become hot during heating. To prevent stains, pitting or other problems associated with high temperatures, avoid overheating foods high in oil, fat, sugar or strong colourants, such as tomato. Not suitable for use in ovens or under grills. Set Contains: 1 x 1.1L capacity 1 x 540ml capacity 1 x 230ml capacity Features: Innovative space saving design Airtight lids with easy-pull tabs Leak proof locking lids Containers nest together for convenient storage Colour coded lids Freezer safe Microwave safe Dishwasher safe BPA-free Food grade plastic .