The Ultimate Flask is designed for outdoor enthusiasts, perfect for those who embrace nature regardless of the weather. This 900 ml flask is your ultimate outdoor companion, offering maximum heat performance and ultra-durability. Built with Thermos® quality and performance, and backed by a 5-year guarantee, this flask is ready for any adventure. Its advanced vacuum insulation maintains drinks at the ideal temperature for 24 hours, hot or cold. The rugged stainless steel construction with protective silicone rings withstands drops and bumps, while the double-wall insulation keeps the exterior cool and condensation-free for comfortable handling. The smart pour system features a two-part stopper for controlled flow and spill prevention, and a wide mouth opening allows for easy filling and cleaning. With a 900ml capacity, it holds enough liquid for extended trips, making it ideal for hiking and camping.