Complete Your Set-Up with the Breville BKE700BSS Soft Top Pure The Soft Top Pure is appropriately named given its removable scale filter and BPA free water windows. This cordfree, 1.7 liter jug has a concealed, rapid boil heating element, and its soft top releases slowly to release steam without splattering. When the water reaches a boil the heating element automatically shuts off, and it won’t operate on empty. This kettle is well insulated and perfect for teatime with friends.