Stainless Steel With Lid and Silicone Seal, Stainless Steel Special Airtight Containers which Uses Silicon which keeps food items fresh longer and has all 4 Sides Locks to prevent Spills.deal to carry meals / fruits or any food items to work, travel, School, College outing,hiking etc.100% leak proof containers for keeping food from spilling, stackable design for easily storing the containers on top of each other and the pioneering clip mechanism. Airtight + leak proof steel containers you can carry all types of food including curries, rice, sabzi, daal, cut vegetables and fruits and more. These containers are made from high quality nonmagnetic stainless steel body.