OuterEQ 32 oz Vacuum Insulated Stainless Steel Water Bottle Double wall vacuum insulated stainless steel water bottle keeps drinks cold for up to 24 hours and hot for up to 6 hours. A Vibrant Variety of reusable beverage bottles made from high-quality, food grade 18/8 Stainless Steel. High quality powder-coated matte finish exterior that never sweats. Lightweight design will fit snuggly in most vehicle cup holders, bicycle and backpack carry cages. Perfect for the beverage of your choice, great to use as a water bottle or beer growler.