... 2.Capacity: 1L 3.Thinckness:double wall 4.Packing with box 5.Certificate:CIQ 1LStainless Steel Double Wall Travel Vacuum FlaskStainless ... Mn 5.5-7.5,Cr 16-18,Ni 3.5-5, N 0.25max 18/8 stainless ... 2.0max,Cr 18-20,Ni 8.0-10.5 3. Advantages of stainless steel vacuum flaska: Molding, soldering, ... and recyclede: Multiple sampling to test, they are double wall, could keep hot and cold for 24hours 1LStainless ...