Food-grade materials and environmental protection] High-quality 1000ml reusable silicone food bags. There are four colors of white, green, blue and red. The bag does not contain lead and chloride, and does not contain BPA. This means that there are no harmful chemicals and you don't have to worry about the quality of stored food. [Air-tight seal and leak-proof] We added extra thickness to the bag to increase strength and durability. The food storage bag set adopts a sealed design to keep all your food and beverages fresh and anti-oxidant, avoid liquid leakage, extend the freshness of food, and obtain healthy nutrition. [Suitable for refrigerators, freezers, microwave ovens, ovens and dishwashers] heat-resistant, cold-resistant, and temperature-resistant. The temperature resistance can reach -58~482(-50+250). (Reminder: If you need to put the food bag in the microwave oven, please open or remove the plastic seal). [Multi-purpose food ziplock bags] These food preservation bags can not only be used to store solid or liquid food in your kitchen, but also allow you to enjoy fresh and delicious meals or snacks at home, office, picnic or travel. Available Reusable silicone bags can replace most disposable plastic bags.[Easy to use and clean] These bags are easy to put on and take off. The sealed slide is very easy to use (it will be a bit tight at first). They are easy to clean and suitable for dishwashers.