• Reusable bottle made of stainless steel with double vacuum-insulated walls. • Maintains the temperature of beverages: up to 10 hours cold, 12 hours hot, and 24 hours with ice. • Includes high-resistance leak-proof cap and a practical hanger. • Rust-proof and condensation-free design. • Does not absorb odors or flavors and is completely BPA-free. • Not suitable for microwave use or dishwasher cleaning.