This stylish three-layer lunchbox is designed to keep your food warm for hours, featuring high-quality food-grade plastic on the outside and premium stainless steel inside. The stainless steel is durable, healthy, corrosion- and heat-resistant, easy to clean, and won’t easily stain. The shell is made from advanced PP material with a hollow design for better insulation, keeping food fresh whether hot or cold. A food-grade silicone seal on the first layer and secure PP lock buckles prevent leaks and spills. Its portable size, hidden handle, and detachable layers make it easy to carry, enjoy, and clean. Perfect for picnics, camping, fishing, school lunches, and more, with 3- or 4-layer options available, airtight lids ensure no mess on the go.