Features 1、510ml capacity is a portable travel mug when you are on the go. It is still lightweight even it is full of beverages.It is suitable for most coffee machines. The lid of coffee cup has a protruding part so it is easy to find the hole without looking. Flip lid opens and locks easily, you can open the flip lid with thumb in one second to drink from the cup. 2、Double wall vacuum insulation coffee mug, high quality BPA free lid, 304 stainless steel material interior and adopt one piece molding technology, not easy side leakage and damage, keeps drinks odor free. This sturdy and durable quality, carefully designed, durable, fall proof, rust proof, better than using plastic or glass bottles. 3、Spill proof travel coffee mug, with screw in threaded cup lid is equipped with a sealing ring, which provides a good leakproof effect. Anti fingerprint matte surface, comfortable to touch. Air vent on the mouth piece , allows beverages to flow out smoothly, without gushing or overflowing. There is a silicone pad on the bottom of this coffee cups that helps stop it from sliding about and protect furniture from scratches and chips. 4、Keep your coffee hot and cold for hours, this coffee cup for maximum temperature retention, hot drinks keep warm for up to 4 hours and cold drinks stay cold for up to 6 hours,and feel energized for the day. This coffee mug is a good for business gifts and family gift! 5、Wide application, this coffee mug is great for daily life and outdoor adventures and fit most of vehicle cup holders, home, office, parties road trips, camping , traveling, in the car,at the beach, hiking, sporting active, picnics, just about any other activity you can dream up. Specifications Item Type: Thermal Coffee Cup Material: Stainless Steel + Silicone Color: Black Cup Size: Approx.9x17x7cm / 3.5x6.7x2.8in Weight: Approx. 301g / 10.6oz Capacity: 510 ml Package List 1 x Coffee Cup