The ECO-THERMOS Bamboo Stainless Steel Thermos Flask (450 ml) combines style and sustainability with a bamboo exterior and durable stainless steel body. This insulated thermos flask keeps drinks hot for 12 hours and cold for 24 hours. Leakproof and BPA-free, it’s perfect as a gym, office, travel, or outdoor thermos flask. The wide mouth design with a cup ensures easy filling and cleaning. Stay hydrated anywhere with this eco-friendly, portable, and durable thermos flask!