Products sold and shipped by Amazon.co.jp are genuine Japanese products. The authentic products are sold in Japan that comply with inspection standards Dishwasher Safe: Main unit only (excluding lid) Vacuum seal requires a dedicated Zwilling vacuum sealer Product Size (W x D x H): 6.1 x 3.3 x 2.8 inches (155 x 85 Capacity: 11.8 fl oz (350 ml), Maximum Storage Capacity: 6.8 fl oz (200 Material: Heat resistant glass (body), ABS resin (lid), silicone rubber (gasket/valve) Country of Origin: China Heat resistance: 456°F (280°C) (main unit); Cold resistance: -4°F (18°C) (main unit) Microwave use: Main unit only (excluding lid) Oven Use: Main unit only (excluding lid) / Freezer Safe: Yes