Function 4, made in Germany by WMF provides four additional functions by variation of the lid position and silicone ring, the lids were inspired by the Apple ipod. The pot lid has 4 different pouring holes: pour out fully, large sieve opening, small sieve opening, and closed. The cookware also incorporates hollow handles which do not get hot during normal use and all pots have an inside scale. This set consists of 1x low casserole with lid 20cm, 1x high casserole with lid 16,20,24cm and 1x steaming insert 20cm and all items have a red silicone ring.