Stay refreshed with the LONGSTAR SIPPER, a stylish and practical flask designed for everyday use. With a 580ml capacity, this vacuum cup keeps beverages hot or cold for hours, making it perfect for school, office, or travel. Each flask features playful cartoon designs with vibrant colors and unique lid symbols (crown, bear face, heart), adding personality to your hydration routine. The durable strap and matching accessory make it easy to carry, while the premium stainless steel interior ensures safety and long-lasting performance. Packaged in branded boxes, the Mengqu Vacuum Cup combines functionality, fun, and modern design to brighten your daily lifestyle.