The legendary double-walled 1-litre Classic Vacuum Insulated Flask has had a makeover and is now more durable, provides a smoother pour, has an improved handle for a better grip and can be washed in the dishwasher. It is still fully leak proof, made from naturally BPA-free stainless steel with a rust-proof finish, keeps liquids hot (or cold) for 24 hours or iced for 5 days and comes with an insulated lid that doubles as a cup. Built to last a lifetime.