Silicone YOU WILL GET: 3 different size Winrock silicone food storage bags. They are 100% pure silicone and BPA, lead, PVC, latex and phthalates free. The bags are easy to wash and durable, not as the single-use plastic bags, they are endlessly reusable. SUPERIORITY: Winrock bags are soft and elastic , they are zip lock seal, dont need any lids to keep food fresh, and the bags can stand up and easy for keep soup or juices in it. Just burp the bags to remove excess air and pinch the seal closed. They are Small figure but large capacity, Save more space on your refrigerators. DISHWASHER AND MICROWAVE SAFE: They are dishwasher safe (bottom rack too), freezer and microwave safe. The bags can be boiled in water with food in. They can Folded up and store when not use to save space. SIZE AND WARRANTY: Large Size: 8.8"x 6.9" x 2.9 53 oz" 1500 ml. Medium Size7.8x 5.9x 2.5 32 oz/ 1000 ml. Small Size: 6.3" x 4.47" x 1.9", 18 oz/ 500 ml. with 36 month long warra