About this item [cup body quality] : double inner 304 outer 304 stainless steel, the inner wall and the outer wall are 0.5mm thick, the outer wall of the inner wall copper plating, the inner wall electrolytic, seamless stretching of the inner wall, vacuum insulation, heat preservation 6-12 hours, ice preservation 12-24 hours. 【 Cup Lid 】 Food grade PS push sheet lid. 【20oz(approx 600ml)】 Cup Size: weight 350g, mouth diameter: 8.8cm, bottom diameter: 7.2cm, height: 17cm 【30oz(approx. 900ml)】 Cup Size: Weight 420g, mouth diameter: 10cm, bottom diameter: 7.5cm, height: 19.5cm. Perfect Gift Set: This tumbler is a great gift for a football fan of any team. Buy one for yourself and gift one to a friend for their birthday, Christmas, Father’s Day, Mother’s Day and more.