1.double walls stainless steel 2.vacuum insulated structure 3.custom logo and color ... lid is safe food-grade,the PP material is strong structure.4.The curved design of flask body is more ... make pouring water cleaner and more convenient.6.The flask can be spray painted in any color.7.Logo ... as sales,we have products,mainly such as stainless steel vacuum flask, coffee pot, mug, auto mug, sports bottle,etc ...