This 400ML kids water bottle features a stainless steel material and food-grade silicone nozzle, providing a safe and healthy drinking experience. Its insulation function can keep water warm at a temperature above 50°C for 6 hours when poured with 95°C hot water, or keep it cold below 10°C for 6 hours when filled with ice cubes. With a sturdy construction and a safety lock design, this portable cup is ideal for children and can easily be attached to a school bag for hands-free carrying.