VEVOR 40 oz Insulated Water Bottle, Stainless Steel Sports Coffee Cup with Lid, Handheld Travel Coffee Mug Double Walled, Camping Hydration Flask Leakproof, for Indoor/Outdoor School, Work, Black

The product description doesn't mention whether the exterior remains cool to the touch when filled with hot beverages. However, it does state that the water bottle is made of double-walled 18/8 food-grade stainless steel, which suggests that the exterior may remain cool to the touch when filled with hot liquids.

Based on the product information, it does not explicitly mention whether the water bottle is compatible with car cup holders.

According to the product description, it can keep beverages hot for up to 12 hours and cold for up to 24 hours, making it suitable for both hot and cold beverages.

According to the product description, the bottle lid is equipped with a silicone gasket that prevents leaks even when the bottle is shaken or tipped 360°.