The insert is made of metal and is therefore resistant to impact. Keeps the contents warm/cold for a long time since you don’t need to remove the lid entirely when you pour. Not to be used on a hob or a hotplate. Keeps the contents warm/cold for up to 6 hours. Wash this product before using it for the first time. To pour, turn the lid in the direction of the arrow until it stops. To fully open and remove the lid, keep turning it firmly in the direction of the arrow even after you hear a slight click.