Are these containers microwave-safe?

The plastic is BPA-free, but check the base stamp before heating. Most plastic containers of this type are fine for short reheating, not for oven use or long boiling.

Do the lids really seal airtight?

They are designed with sealing lids for dry goods and fridge storage. Owners of similar sets report the seal holds well when the lid is pressed down evenly on all sides.

How much food fits in one container?

Each holds 380 ml, roughly 1.6 cups. That is a single serving of leftovers or a small bag of coffee, not a family-size batch.

Plastic containers like these usually tolerate freezer use, but leave headroom because liquids expand. Let them thaw before opening to avoid cracking stiff plastic.

Are they dishwasher-safe?

The container bodies generally handle the top rack. Hand-wash the lids and seals to keep them fitting tightly and to avoid warping.

How do they compare with glass containers?

They are lighter, cheaper to replace and shatterproof, but glass resists stains and odors better and can go from freezer to oven. Choose these for dry goods and lunches, glass for saucy foods and reheating.