Double walled 18/8 grade Stainless Steel|Vacuum insulated|Inner wall plated with copper for ultimate conductivity|Twist on leak-proof, air tight lid|Silicon bubble grip band|BPA free|Cup holder compatible|12hrs for hot drinks|48hrs for cold drink|Wide mouth opening|Supplied: in a black po ‘di fame presentation tube 28cm H x 8cm Dia.Capacity: 550ml