Double-walled thermos - With double-walled vacuum insulation technology, long-lasting and efficient heat retention, keeps drinks cold for up to 24 hours and hot for up to 12 hours. Capacity: 750 ml. High quality material - Made of food grade silicone seal and high quality stainless steel, this thermos will not rust, odourless, safe and non-toxic, free from BPA, BPS, phthalates, even children can use it with confidence. Never worry about leaks again - with a special precision engineering screw cap, this water bottle is completely leak-proof and won't leak a drop of water even when lying flat, making it the perfect travel companion. Fashionable and durable - This stainless steel thermos bottle is made of natural stainless steel, with a stylish look, simple and elegant, no spray paint layer, no colour peeling, better visual effect and more durable. Best after-sales service - we offer customers 1 year warranty, if you have any questions, you can contact us at any time, we will reply within 24 hours.you can buy with confidence.