This vacuum insulated water bottle will keep liquids cold or hot longer on the go than non-insulated bottles. The convenient twist off cap has rubber grip and carrying handle. Double wall, vacuum insulated 18/8 stainless steel water bottle with copper lining. Copper-lining keeps drinks cold for up to 24 hours and keeps drinks hot for up to 12 hours. Durable powder coated exterior. Holds up to 20 FL oz (600ml) of hot or cold liquid.