... ) Item No.: HO-400K, HO-600K2) Capacity: 400ml, 600ml3) Material: Double walled Stainless steel4) Package: Each packed in color box or ... to use 2) Auto-lock button,safe and durable3) Vacuum double walled S/S structure4) Food-grade antibacterial PP material, healthful ... or comments, please contact us without any hesitation. Stainless steel double layer kids flask