This mug is spill-proof, 12V-powered, and can hold up to 16 ounces of liquid. It has a durable construction and is designed to keep your beverage warm for hours. It also fits most standard cup holders, making it a convenient and practical choice for on-the-go coffee or tea lovers. Price drops from $35 to just $14. Spend $49+ to receive free shipping. Otherwise, it adds $8.95.