Material: Exterior and Interior: High-quality, food-grade stainless steel, ensuring durability and resistance to rust and corrosion Cap: BPA-free, leak-proof lid with a silicone gasket for a secure, tight seal Insulation Layer: Double-wall vacuum insulation technology to maintain temperature Capacity: Volume: 1 liter (1000 ml), suitable for extended hydration on-the-go Dimensions: Height: Approximately 10-12 inches for a standard, easy-to-carry size Diameter: About 3-4 inches, fitting most car cup holders Weight: Empty Weight: Approximately 400-500 grams, making it lightweight yet sturdy Temperature Retention: **Cold Retention
