This coffee mug applies high-quality double-walled stainless steel construction to keep your drink at its original temperature for up to 6 hours. The bottom is designed with non-slip silicone, which increases friction, feels comfortable to hold, is not easy to slip off, and protects furniture from scratches and chips, it is corrosion-resistant, anti-oxidative, more durable, and more thermally insulated. The travel coffee mug includes an eco-friendly flap opening that makes drinking one-handed a breeze. And the surface of the lid also has a straw hole design, which allows you to drink straight from the cup or use a straw. The narrow body design makes it easy to grab and go, and also fits most car cup holders and coffee makers.