Lids snap together and to container bases so you can always find the right lidGraduated sized containers nest for compact storageOne lid fits multiple basesSet includes (3) 0.5 Cup, (2) 1.25 Cup, (1) 2 Cup, (2) 3 Cup, and (1) 5 Cup; Includes lidsMicrowave, freezer and dishwasher-safe, BPA-free, Made in the USA