This stainless steel bottle is perfect for the on-the-go lifestyle! Designed with a 20 oz. capacity, each bottle has a 201 stainless steel exterior and 18/8 inner walls and copper lined, double wall vacuum insulation that will keep drinks at optimal temperatures (cold for 18+ hours and hot for 8+ hours). Features include a twist on lid with rubber gasket, convenient flip up carrying handle and a flip up drink through lid. This product is BPA-free, sweat-resistant and ships assembled. Hand wash recommended.