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, don’t 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 Size?7.8”x 5.9”x 2.5” 32 oz/ 1000 ml. Small Size: 6.3" x 4.47" x 1.9", 18 oz/ 500 ml. with 36 month long warranty. HOW TO USE: Winrock bags can used as frozen bags, lunch bags, food storage bags, snack bags, cosmetic bags, pen bags and so on. They are thick and durable, not easy for damage, so it is very suitable for everyone use. Not as the food box containers, they are small and easy to take, they can used in home, kitchen, office, outdoor or a travel.