Keep your coffee magically hot while searching the halls of Hogwarts with the help of this officially licensed Harry Potter Happiness Can Be Found 20 oz. Stainless Steel Tervis® Tumbler With Lid. This sleek double-walled Tervis® Tumbler features a cool Harry Potter Happiness Can Be Found design that's printed with eco-friendly plant-based inks directly on the stainless surface. This tumbler comes with a BPA-free leak-resistant, easy-to-clean, and easy-close hammer lid. Triple insulation reduces condensation and keeps your drink hot for up to 8 hours or cold for up to 24 hours (use caution with hot liquids). Copper-lined 18/8 stainless steel construction is durable, and the material won't retain tastes or odors. For best results, hand wash with soap, water, and a scratch-free sponge. Towel dry immediately to help preserve decoration. Do not soak or use cleaning materials (bleach, chlorine, etc.) and do not put in dishwasher, freezer or microwave.