INSULATED: The Pura Stainless Steel Lunch Box is made of high-quality 18/8 stainless steel, which provides excellent insulation for your food. The interior of the lunch box remains cool or warm for 4-6 hours, depending on the contents. LEAK PROOF: The Pura lunch box features a leak-proof silicone seal that ensures your food stays fresh and mess-free. The lid has a secure, snap-on design that keeps it firmly in place, preventing accidental opening and spills. PORTABILITY: The Pura Stainless Steel Lunch Box is designed for on-the-go convenience. It is lightweight and compact, making it easy to carry in your bag or purse. The lunch box also fits easily into car cup holders and bike bottle cages. SECURE LID: The Pura lunch box features a secure, snap-on lid that stays firmly in place and a silicone strap to further prevent accidental opening and spills. EASY TO CLEAN: The Pura Stainless Steel Lunch Box is dishwasher-safe and easy to clean. Hand-washing is also recommended to maintain the lunch box's shine and durability.