Kinzi Insulated Wide Mouth Stainless Steel Water Bottle, 32 oz Vacuum-sealed double walled stainless steel construction perfectly insulates contents, keeping your drink either piping hot for up to 12 hours or ice cold for up to 24 hours 32 oz. size is optimal for day-to-day carrying use Powder-coated, matte black exterior keeps sweat and fingerprints off, offering easy maintenance and excellent grip FDA food grade, 100% BPA free, 18/8 stainless steel design is safe and suitable for use in the office, on the road, and out in the sun