(This product has undergone rigorous material testing in professional US laboratories and has passed all of the tests.) Entire food storage containers with lids set is made of PP-5 (Polypropylene-5) material among plastics. The characteristics of this material are that it can be used as food grade, transparent, odorless, BPA-free, PVC-free, lead-free, has excellent stability, and can be reused for a long time.

Versatile Size Airtight ContainersBiuLeon 20 pack airtight food storage containers includes 8 pack rectangular containers(50.7, 34, 17, 10, 4.2oz), 12 pack round containers(40, 24, 13, 6, 4oz). Sizes ranging from large to small, whether it's leftovers, soup, snacks, or sauces, they can all be easily stored and kept fresh.

100% Leak ProofAirtight food container with lids are protected by high quality food-grade silicone seal ring and 4 side latches, double protection ensures excellent sealing and leakage prevention. so you don't have to worry about liquid leakage even during vigorous shaking.

Easy to CleanMeal prep containers has good high (low) temperature resistance and can be used directly in the microwave, dishwasher, refrigerator or freezer (Note: Do not cover the lid when heating in the microwave, as ultra-high temperature may deform the sealing ring inside the lid, resulting in weakened sealing performance)

Space SaveFood storage sets are designed with multiple stacked layers, from large to small food containers can be nested into each other, When not in use, the entire set can be stacked to a height of no more than 10 inches, saving you more valuable space in your kitchen.

12 Months WarrantyBiuLeon provides up to 12-months warranty, during this period, if you encounter any quality issues or are unsatisfied, please contact us at any time, and we will provide you with a satisfactory solution.