Features:-The inner electrolyte coating further amplifies the constant temperature coefficient and has heat preservation and cold preservation properties.-Made of stainless steel, it is not easy to rust, corrosion-resistant, strong and resistant to falling.-The concave and convex design on the bottom of the bottle is anti-slip and can be placed firmly to prevent it from falling over.-The mouth of the bottle is smooth and round, so you are not afraid of scratching your hands or mouth, and it is safe to use.-The lid has an environmentally friendly sealing ring to prevent accidental spillage, and the rotating opening lid has a straw hole for convenience and practicality.-Suitable for sports, wedding, business, home, car, office, outdoor, travel, gift, school, e.