... stainless steel 3042.Double walls stainless steel and high vaccum make it insulated from outside,can keep warm or ... make pouring water cleaner and more convenient.6.The flask can be spray painted in any color.7. ... sales,we have products,mainly such as stainless steel vacuum flask, coffee pot, mug, auto mug, sports bottle, ... long-term cooperation!! children double walls stainless steel thermos vacuum flask