This is a new feature to the Prestige collection Woven Wood blinds. It is a movable backing attached to the shade and operates independently. If you need privacy, the fabric is porous, or you need added protection, for the same cost as a normal backing, why not have the best of both? You can find this on the select options for Prestige Group 1, Prestige Group 2 and Prestige Group 3 woven wood blinds.