The Lock & Lock Bisfree modular stackable collection is a premium airtight container range that is designed to save space in your pantry and fridge. From storage to plating, all together!: Bisfree modular consists of sophisticated design with stripe pattern and modern brown coloured cap. The container can be used as tableware right after heating in microwave. 99% antibacterial silicone packing: 99% antibacterial silicone packing as well as Lock & Lock's 4-sides locking system keeping from invisible microbes penetration such as e.coli and mold. Use it in the freezer as well as the microwave!: no colour change, no twisting and no damage in the result of the test conducted by sgs Korea (cold and heat resistance test of ecozen under -40℃ to 100℃ temperature during 1 hour). Modular design system: stackable Bisfree modular series is designed to be stable and tidy. It helps to minimize extra space with high space efficiency. A ‘6mm hidden cap’, an idea born from housewives’ inconveniences when taking food containers from the refrigerator, is designed to keep stacking containers from falling down to the floor. Features a 4-sided locking system that works with the silicone seal to ensure a 100% air and liquid tight function.