Premium 17oz. stainless steel vacuum flask with military-grade durability and sleek polished finish. Double-wall insulation maintains temperature for 24 hours (hot/cold) using advanced copper plating technology. Leak-proof threaded lid features precision CNC machining for perfect seal. Ergonomic curved design fits car cup holders and backpack side pockets. Ideal for outdoor adventures, office commutes, and gym hydration. Commercial-grade 304 stainless steel resists dents and corrosion. BPA-free construction meets FDA food safety standards. Matte non-slip base prevents surface scratches. Lifetime warranty against manufacturing defects.