Size (approx.): 19 x 12.5 x 18 cm, Body weight (approx.): 0.6 kg Materials: Inner bottle: stainless steel, body: stainless steel (acrylic resin coating), shoulder: polypropylene, inner cap: polypropylene, seal packing: silicone rubber, vent packing: silicone rubber Country of Origin: China Heat retention: 66 degrees or higher (10 hours), cold retention: 11 degrees or lower (10 hours)