Glasslock delivers the flexibility of using one container for the microwave, freezer, dishwasher, and oven. Odor-free, stain-proof, and airplus liquid tight, the easy latching lids bring more convenience in storing your food. FDA approved and recognized as safe to use in the food industry. Glasslock comes in different sizes and types to meet your everyday needs. The transparent and clear glass design makes it convenient to identify the content and will look great in any kitchen.Glasslock is made of silica, soda ash, limestone, and other natural components, making it eco-friendly and recyclable. It is BPA free and does not contain any harmful environmental hormones.