Made of 304 stainless steel, providing two layers of vacuum insulation to maintain the temperature of the beverage. Dust proof, BPA free coffee puree; Matte powder coating and non welded structure; Double layer vacuum insulated bottle. This lightweight insulated cup can hold 17 ounces of coffee or tea and can be kept warm for several hours, making it perfect for your favorite cold beer, juice, or cocktail. Good insulation, excellent quality, and modern design make it an indispensable accessory for the entire family, and an ideal choice for outdoor parties or comfortable family nights.