Ceramic-Lined Interior Ensures pure taste without metallic flavor or odor. Double-Wall Vacuum Insulation Keeps drinks cold for up to 24 hours or hot for up to 6 hours. Wide-Mouth Lid & Spout Easy refilling, smooth pouring, and effortless sipping. Leak-Proof Design Airtight lid with secure threading prevents spills during adventures. Silent Silicone Base Protects surfaces with a soft, non-clanking landing. Durable & Spacious Half-gallon capacity, perfect for hiking, camping, or team activities.