JOSEPH JOSEPH | Nest Lock Multi-Size Container | Set - 3 | Multicolor | Space-saving, nesting design Easy-find, snap-together lids and colour-coded bases Airtight, leak-proof and stackable lids Freezer, microwave and dishwasher safe (top rack only) BPA free. Organize your kitchen and food storage with an innovative design. Enjoy the comfort of a leak-proof, airtight seal, while keeping your food safe and fresh. Plus, the color-coded bases make it easy to find and use the containers you need.