Excellent temperature characteristics, elegant ergonomic shape, compact size, original carmine-red color, and absolute tightness distinguish the KING thermos cup among its counterparts. Its quality perfection is created at the legendary manufacturer THERMOS's own factories under United States Patent D600.071S using advanced technologies and premium materials. Premium-grade 18/8 AISI 304 Stainless Steel, unique deep vacuumization and seamless welding technologies make KING SK-1005 thermos cups durable, reliable, with high temperature characteristics - drinks stay hot and aromatic for at least 6 hours, and cool and fresh throughout the working day. In addition, the special steel processing technology makes it extremely smooth, so residues of the contents do not linger on the inner walls of the thermos cup, odors are not absorbed, and the thermos cup is easy to clean. All materials are safe, BPA-free, heat-resistant, and impact-resistant. The thermos cup fully complies with the International quality standard EN12546-1:2000. The unique DrinkLock® lid-plug design is developed by the manufacturer for maximum comfort when using the thermos cup. You can drink from it without removing the lid, thanks to the convenient slider that protects against spills and dust entering. The slider rotates 360 degrees in any direction, it is easy to open and close with one hand. "Open/Close" indicators are provided to determine the slider position. The upper edge of the lid-plug is made of stainless steel, significantly increasing its service life. The screw cap is deep enough, equipped with a wide food-grade silicone seal, which enhances the thermos cup's heat-insulating properties and ensures its tightness and reliability in use. There is a special attachment for a tea bag on the inner side of the lid, providing additional convenience for brewing a drink directly in the thermos cup. The lid-plug can be completely disassembled for thorough cleaning. In hot weather, drinks will stay cold and fresh longer if you put ice cubes in the thermos cup - the lid-plug design will prevent them from falling out while drinking.