ship from Japan 25% lighter than the ultra-light HydroFlask(R) bottles of the same size (24oz, 32oz) The double insulated wall is a tapered structure. The top is ultra-thin to reduce weight, while the bottom is thicker to increase durability. Lightweight honeycomb insulation cap with perforated strap and aluminum pivot. In addition to preventing water leakage, further weight reduction has been achieved. Category: Unisex Adult size:825.58centimeters