This design features the flags of the USA and Serbia, half of each, in a heavily distressed vintage style. If your heritage is from the US and you now live in Serbia, or you have Serbian heritage and now live in America, show your cultures! A great design for Serbian people or Americans! Whether you're home enjoying a holiday, or traveling and want to make sure everyone knows where you're from, it's great to show pride in your origins. All origins should be celebrated! Dual wall insulated: keeps beverages hot or cold Stainless Steel, BPA Free Leak proof lid with clear slider