This is a stainless steel portable thermos. Height: 24.5 cm Capacity: 0.35L [Heat Retention] 6 hours at 60°C [Cold Retention] 6 hours at 9°C [Material Type] (Inner bottle, inner lining) Stainless steel (Outer bottle, body) Stainless steel (Lid) Stainless steel, polypropylene (Packing) Silicone rubber This was received as a promotional item. It is a new, unused item, but it has been opened to check its condition. Please refrain from purchasing if you are concerned about minor imperfections.