This lunch box features a double-layer design with a 1.8-liter stainless steel container and three upper compartments. It has strong leak-proof properties with latches and a rubber sealing ring to prevent spills. The lunch box uses a 100W PTC heating system to heat food evenly in 20-30 minutes. Price drops from $29.99 to $14.99 with code "P4UMFKXP". Shipping is free with prime.