1.Available in a variety of sizes,1L,1.2,L,1.5L,2L,2.5L,3L, 2.PP lid and container with silicone sealing.BPA free and eco-friendly.Microwave safe,freezer safe,dishwasher safe. 3.Patened locking design.The lid and box clamp function is achieved by the leverage principle.,more convenient,more concise,more firmer and sealed. 4.The gap between the main lid and inner lid can storage the cutlery,cheese,ice pack and other units that you want to storage individually. 5.Pefect for picnic,lunch,bread,snack,cookies,dessert,etc. 6.Lock lids are airtight and leak-proof for secure storage. 7.Available in a variety of colors and packing to make it more attractive.