This water cup is made of corrosion-resistant titanium material, lightweight and durable, great for home and outdoor use, such as camping, hiking, backpacking, etc. Specifications: Material: Titanium Size: 300ml: 82 * 70mm / 3.2 * 2.8in (D * H); weight: 72g / 2.5oz 350ml: 85 * 75mm / 3.3 * 3.0in (D * H); weight: 85g / 3.0oz 420ml: 85 * 90mm / 3.3 * 3.5in (D * H); weight: 90g / 3.2oz 450ml: 85 * 97mm / 3.3 * 3.8in (D * H); weight: 92g / 3.2oz 550ml: 100 * 80mm / 3.9 * 3.1in (D * H); weight: 107g / 3.8oz 650ml: 100 * 98mm / 3.9 * 3.8in (D * H); weight: 115g / 4.0oz 750ml: 100 * 110mm / 3.9 * 4.3in (D * H); weight: 120g / 4.2oz Package List: 2 * Titanium Mug 1 * Storage Sack