The new generation of Miele dustbags will give you the highest levels of efficiency when using your vacuum cleaner on a lower power setting. The suction performance does not decline with reduced power, meaning that power can be reduced on 1600W+ motors for similar cleaning results.Miele HyClean 3D Efficiency dustbags are the first to market random-spun bag with 3D effect; the new sidefolds ensure even the slightest flow of air is sufficient to inflate the 3D form. The improved bag volume allows you to vacuum for up to 20 percent longer before you need to replace the dustbag.