Color: stainless steel(Size 1)Material: 304 stainless steelDimensions: Length 22cm/8.66"、 Bottle diameter 0.13cmFeatures:1、304 stainless steel、 non-corrosive、 no rust2、 containing ethanol and purified water to try to ensure rapid cooling、 enduring freezing3、 come from the freezer、 you can directly into the bottlePacking list: 2 * bar cooling