Made of food-grade silicone material, reusable storage bags are non-toxic, save our planet and save your money. The reusable lunch bags feature an upgraded closures sealing technology that is more sealed, leak-proof, waterproof and hygienic, perfect for storing and preserving food. With the improved double closure and an anti-slip design, the reusable sandwich bags for kids is easier to open or close. The colorful double closure of reusable sandwich bags enriching your life more interesting and wonderful. 7.8" x 7"- 33oz . Welcome to custom your logo. Additional Information IMPORTANT: If the supplier lists any certifications/approval from agencies such as CDC, FDA, NIOSH, NPPTL, or ASTM etc., please check to ensure such certifications are current and appropriate