This product is actually made of stainless steel inside and outside, so this product can stay cold for 12 hours and hot for 6 hours（the bottle can keep hot 12hours and keep cold 24 hours. The inner layer of the cup is coated with ceramic paint, so it looks like a ceramic inner pot.
The ceramic paint we use is water-soluble ceramic paint, safe and non-toxic formula, free of benzene, ketones, esters, formaldehyde, free TDI and toxic heavy metals, ceramic paint does not contain VOC harmful gases, has a small odor, and is harmless to humans. Non-combustible, water-resistant, alcohol-resistant, and impact-resistant; ceramic paint film has good hardness, ultra-high brightness, strong adhesion, high temperature resistance, and anti-aging.
