Bento Box Set:Three layer design,the upper 2*600ml,the lower 1000ML.Normally can keep warm for about 3 hours.
Food Grade Material:Made of high quality food-grade safe BPA-FREE PP plastic (external) and durable 304 stainless steel (internal). No rust, no odor retention.HEALTH AND SAFETY.
Note:If heat in microwave oven,pls put PP cover together,never heat only stainless steel container.Also need to take off lids.