This type of drinkware is designed for keeping beverages at a desired temperature for extended periods, such as keeping hot drinks hot and cold drinks cold.
Key features visible in the image and common for this product type include:
Double-wall construction: The mug features double-wall vacuum insulation, which helps to prevent heat transfer and keeps the exterior cool to the touch.
Material: It is likely made from stainless steel, a common material for durable and safe drinkware.
Design: The mug has a dark, possibly black, body with a ribbed, blue or grey silicone grip for improved handling and comfort.
Lid: It is topped with a secure lid, typically designed to be splash-proof or leak-resistant for portability.