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The bags are moulded in one piece with no seams and a tested airtight seal, so liquids stay in. Press the two sides of the seal together firmly and squeeze the air out as you close it.

Yes. The bags are made from food-grade silicone, free of the common concerns with some plastics, and are tested for safe use with food at the temperatures they are rated for.

Yes — each bag replaces the single-use plastic bags you would otherwise use for lunch, leftovers, freezing and cooking. They fold flat, stand on their own and are designed to last for years.

Wash by hand with warm, soapy water or put them in the dishwasher. They resist stains and odours, but for strong smells like garlic or onion, a rinse with a little baking soda and warm water helps.

Yes. The food-grade silicone stays flexible at freezer temperatures, and the airtight seal protects contents from frost and odours. Fill them leaving a little room for food to expand as it freezes.

Yes. They are made from food-grade silicone and withstand a warm-water bath for gentle cooking, like sous-vide. They are not for direct oven, grill or microwave heating — check the temperature limits printed on the bag.