18/8 Food Grade Stainless Steel Single Wall Design 100% BPA Free 100% Recyclable The M8 is Mizu’s most popular product because it is the ideal size and weight whether using at home, in your car, or on any adventure. Opening: Standard Volume: 750 ml / 25 oz Height: 212 mm / 8.35 in Diameter: 75 mm / 2.95 in Weight: 5.5 oz / 156 gm Fits in a cup holder: Yes