LED Temperature Display: The center flask showcases a built-in digital screen on the lid that displays the internal liquid temperature in real-time.Double-Wall Insulation: Built with premium stainless steel (often SUS 304 or SUS 316) to provide exceptional heat and cold retention for hours.Rugged Design: Features a durable exterior powder coating, matching a sturdy carrying handle for outdoor, gym, or office portability.Capacity Options: These sports models typically range from 600ml to 1000ml capacities