This 300ml long style slim water bottle is a sleek and compact stainless steel thermos designed for easy portability and efficient temperature control. Featuring a double-wall vacuum insulation, it keeps beverages hot or cold for hours, making it perfect for travel, commuting, or outdoor activities. Its slim design ensures it fits easily into bags or cup holders, while the high-quality stainless steel construction offers durability and a long-lasting finish. Whether you’re sipping on a warm coffee or a chilled drink, this travel thermos provides a stylish and practical hydration solution in a convenient, space-saving size.