High Quality Content by WIKIPEDIA articles! Voile is a soft, sheer fabric, usually made of 100% cotton or cotton blends including linen or polyester. The term comes from French, and means veil. Because of its light weight, the fabric is mostly used in soft furnishing. Full-length curtains in hot countries are made with voile and used as window treatments, mosquito nets etc. When used as curtain material they are similar to net curtains.