... Green, Blue, Brown, Siler GrayTriple walled Stainless SteelTechnology: Vacuum insulated ThermosNet Weight: 14.00KG/12PCS/CTNGross Weight: 17.50 GK ... Stainless steel structure Vacuum insulated flask Double walled 18/8Stainless steel insulated vacuum coffee pot,vacuum insulated for maximum temperature retention, ... and 15,000 glass bottles Suggest warming up or pre-cooling the pot as to keep hot or cold ...