This 350ml tumbler features a double-wall construction for excellent heat retention. (With the separately sold micro coffee dripper, you can enjoy fresh coffee anywhere.) - Model Name: WALLMUG SLEEK - Capacity: 350ml (12oz) - Materials: Polypropylene (cup, lid), Silicone (lid) - Temperature Range: Maximum 150°C, Minimum -40°C Thank you for viewing. This is a new, unused item, but it has been stored at home for a long time. Please understand this before purchasing.