Made of high-quality food-grade 304 stainless steel. Features a double-wall insulation design. BPA-free construction. Keeps drinks hot for 6 hours. Keeps drinks cold for 8 hours. Capacity of 510 ml/17 oz. Measures 3.45 inches in length and 7.09 inches in height. Fits most car cup holders. Features a non-slip cup bottom. Equipped with a silicone seal for leakproof performance. Designed with a widely cup mouth for easy cleaning. The lid has a flip-top design for easy one-handed drinking. The built-in silicone seal on the lid prevents liquid from spilling. The lid surface includes a straw hole for direct sipping or using a straw. The frosted texture of the cup body provides a non-slip grip and prevents scratches. Suitable for various beverages including coffee, tea, wine, juice, and oatmeal. Ideal for indoor and outdoor use, such as at home, parties, travel, and office. Recommended for hand washing; not suitable for dishwashers or microwaves.