This Pibala 304 Stainless Steel Insulated Mug is made of high quality food grade 304 stainless steel to ensure safe drinking and long lasting durability. With double-layer vacuum insulation structure, the excellent insulation effect can maintain the ideal temperature of your drink for a long time. Simple design, stylish and generous appearance, suitable for a variety of occasions, including office, study and outdoor activities. Lightweight and portable, sealed and leak-proof, it is the ideal beverage companion for you to carry around.