Ultralight titanium material, BPA free, odor-free, strong and durable, suitable for home, office, camping, hiking, backpacking, picnic, etc.    Features:  Made from titanium, lightweight and corrosion-resistant.  Pure titanium leaves no metallic smell or taste to the beverage, healthy and reliable.  Foldable grab handles provide a firm grip.  Smooth round edges and corners for easy cleaning.  Comes with a mesh sack for easy storage and carrying.  Suitable for home, office, camping, hiking, backpacking, picnic, etc.    Specifications:  Material: Titanium  Capacity: 450 ml / 550 ml ( optional )  450ml:  Cup Size: 85 * 97 mm / 3.3 * 3.8 in  Cup Weight: 92 g / 3.2 oz    550ml:  Cup Size: 92 * 102 mm / 3.6 * 4.0 in  Cup Weight: 100 g / 3.5 oz    Packing List:  1 * Cup  1 * Storage Bag