Our food storage bags are made of food-grade PEVA material, BPA, Chloride and Lead free, you can use in confidence, without worrying about food health problems. Compared with those single-use bags, our reusable food containers are economical options, can relieve environment burden and save your money. Well-sealed double zipper design has great leakproof performance, suitable for storing liquid. 4 different sizes can satisfy your different storage demands. Perfect assistant for taking food for work, school, travel, picnic, etc..