Stay hydrated from dawn till dusk with the 40oz (1200ml) Stainless Steel Insulated Tumbler. This massive capacity ensures you have enough water, iced coffee, or tea to get through long workdays, gym sessions, or road trips without constant refills. Engineered with advanced double-wall vacuum insulation, it keeps your beverages ice-cold for up to 24 hours or piping hot for up to 12 hours. The high-quality 304 stainless steel interior is rust-proof and ensures your drinks never have a metallic aftertaste. Whether you're a busy professional or an outdoor enthusiast, this tumbler is your ultimate hydration partner for maintaining the perfect temperature all day long.