Elf Tumbler 20oz Full wrap design. Double wall stainless steel, (inner 304, outer 201) Comes boxed with a straw. Designed for those who demand both quality and individuality in their drinkware, these tumblers are your ultimate companion for every occasion. Premium Quality Materials: Made from high-grade, BPA-free stainless steel, ensuring durability and longevity. Our tumblers are resistant to rust, corrosion, and are safe for everyday use. Superior Insulation: Featuring double-wall vacuum insulation, these tumblers keep your beverages at the perfect temperature—hot drinks stay piping hot for up to 6 hours, and cold drinks remain refreshingly chilled for up to 12 hours. Leak proof lid. Care Instructions: To ensure the longevity of your tumbler and preserve the vibrancy of your sublimation designs, we recommend hand washing only. Do not microwave.