Vacuum construction made of double layer 304 high alloy steel. Screw cap. Silicone inserts provide additional sealing and prevent leaks. Despite this, we recommend that you wear the mug upright and do not turn it over, as the product is not 100% airtight.Lid - plasticCasing - metalCasing of the case - powder coatedGift wrap The Palermo mug is ideal for motorists - fits into most cup holders.Stylish and elegant body, the mug is comfortable Hold in hand Keeps drinks hot for at least 6 hours Keeps drinks cold for at least 12 hours To better preserve the temperature of drinks, we recommend filling the product with hot water (before using with hot drinks) or cold water (before using with chilled drinks) Packaging : Gift box Weight in packing: 335 g Weight without packing: 275 g Dimensions in packing: 185 * 95 * 95 mm Dimensions without packing: 165 * 85 mm