Material:
Typically made from durable, food-grade stainless steel, often surgical-grade 304, ensuring no metallic aftertaste and resistance to rust, dents, and scratches. 
Insulation:
Features double-wall vacuum insulation technology to minimize heat transfer and maintain the temperature of your drink for hours. 
Capacity:
Available in various sizes, with this specific mug indicating a capacity of 50 oz (likely a typo, and meant to be 300ml as indicated next to it). 
Features:
Often includes features like an ergonomic handle for easy carrying and a leakproof lid, sometimes with a 3-in-1 multi-functional design.