Are these containers leak-proof?

No. The lids are not designed for a tight seal, so they are a poor choice for soups, sauces or anything carried in a bag. Use them for solid foods and dry goods.

Can they go in the microwave?

Polypropylene is generally microwave-tolerant, but check the base of your containers for the manufacturer's marking. Vent or loosen the lid when reheating, and avoid high-fat foods that heat unevenly.

Can they go in the freezer?

Yes, they are labeled freezer safe. Leave some headroom for food to expand, and let them thaw before handling to reduce the chance of cracking.

How much do they hold?

Each container holds about 3.8 cups, roughly a quart. That is a good size for a family-sized portion of leftovers or a batch of prepped ingredients.

Are they dishwasher safe?

Yes, both the containers and lids are dishwasher safe. Place them on the top rack to reduce heat exposure and warping.

How do they compare with glass containers?

Glass resists stains and odors and handles oven and microwave heat, but it is heavier and can break. These plastic containers are lighter and stack more easily, at the cost of staining and a looser lid.