Nirlon vacuum insulated flask is the perfect go-anywhere companion to help you stay hydrated all day long. The standard mouth opening is large enough to fit most ice cubes, but small enough to sip from on the go. Double wall vacuum insulation keeps your ice cubes intact and your drink icy cold for up to 24 hours. It's large enough to hold water for the day, yet it fits easily into a pack, side pocket or car cup holder. 18/8 stainless steel keeps your favorite beverage fresh and pure, without any leftover flavors or odors. This 800ml vacuum flask comes with pink color. All hydro flasks use recyclable materials and are backed by the manufacturer's lifetime warranty.