1.double walls stainless steel 2.vacuum insulated structure 3.custom logo and color ... pouring water cleaner and more convenient.6.The flask can be spray painted in any color.7. ... as sales,we have products,mainly such as stainless steel vacuum flask, coffee pot, mug, auto mug, sports bottle, ... future and keep a long-term cooperation!! children double walls stainless steel food paint bullet eagle flask