ship from Japan Body size (approx.): 5.8 cm (width) x 5.8 cm (depth) x 15.1 cm (height) Material: Inner bottle: Stainless steel, Body: Stainless steel, Shoulder: Stainless steel, Bottle: Polypropylene, Packing: Silicon Country of origin: China Heat retention effect (6 hours): 56°C or more *The heat retention effect is the temperature of the water when the product is filled with boiling water and left for 6 hours at room temperature of 20°C±2°C, with the water temperature at 95°C±1°C. Cold holding power (6 hours) 10 degrees or less * Cold holding power is the temperature of the water when the product is filled with cold water and left for 6 hours at room temperature of 20 degrees ±2 degrees when the water temperature is 4 degrees ±1 degree Celsius in a vertical position. Aperture: 3.8cm