With Hydro Flask Food Mug you can rest assured that your kids' favorite lunch is tightly sealed no matter how you pack it, and they can enjoy their meals at the perfect temperature anytime of the day.1-TempShield double-wall vacuum insulation keeps food hot or cold for hours.2-Durable 18/8 pro-grade stainless steel preserves a fresh taste.3-100% leakproof design.4-Soft grip lid and perforated Flex Boot ensure easy opening.5-Wide mouth design makes it convenient to eat from.6-BPA and Phthalate-free.7-Lifetime warranty.