I recently purchased this on Amazon, but it was the wrong item, so I'm selling it. I only opened it to take pictures, but it's brand new and unused! Extracted from Amazon below: ↓ Brand: Thermos Material: Stainless steel Color: Dark Gray Capacity: 0.5 liters Features: Cold retention, Heat retention Body size (approx.): Width 8 x Depth 8 x Height 16 cm Body weight (approx.): 200g Capacity: 500ml Materials: Body: Stainless steel (acrylic resin coating) / Lid body: Polypropylene / Lid slide: Polypropylene / Packing: Silicone rubber Heat retention: 76°C or higher (1 hour) / Cold retention: 7°C or lower (1 hour)