This mug is made from 0.3mm thick titanium. It&';s durable, rust-resistant, and non-toxic. Folding handles and a silky-smooth texture for easy packing and a pleasant beverage experience. Material: Titanium (no coating) Weight: 1.7 oz (48g) Capacity: 15.2 oz (450ml) Gradation: Yes, in oz and ml Origin: Designed by TOAKS in the USA, Manufactured in China Weighing only 48g, this is the lightest 450ml titanium cup in the world