Durability:
They are rust-resistant and less prone to breakage, making them suitable for daily use.
Temperature Retention:
The vacuum insulation helps maintain the temperature of the contents, keeping hot drinks hot and cold drinks cold for hours.
Material:
Often made of 304 or 316 stainless steel, which are food-grade and offer good corrosion resistance.
Convenience:
Easy to clean and often designed for portability.