[STAINLESS STEEL] The AIRLOCK Food Containers boast impressive strength with their high-quality 304 stainless steel construction. They are more durable and safe than plastic containers – providing better protection for perishable goods during transport or storage. [AIRTIGHT LID FOR LEAKPROOF] Its snap-on lid provides an airtight, leakproof, and smell-proof seal – perfect for preserving the freshness of your leftovers, baked goods, fruits, vegetables, and snacks. This Stainless Steel Food Container is ideal for kitchen, school, office, and travel. [DURABLE AND ECO-FRIENDLY] Stainless Steel Containers are among the best choice for food containers because of their eco-friendly nature. Plus, they are extremely durable and 100% BPA-free. These Meal Prep Metal Containers are freezer-safe and dishwasher-safe.