Vigor Ziplocks are made with Plastic(PET) and NonWoven fabric, these bags can be used to carry food items on day to day basis for household basic needs, the main intention of making these bags is to avoid food items directly in-contact with plastic materials. Nonwoven fabric is safe for food items , 100% microwave safe and also safe for hot and cold foods. This material can absorb any oil or any moisture on food.