Net curtains are brilliant for adding privacy; for diffusing sunlight and for dressing windows.
In some cases net or voile curtains can also help reduce heat loss and block pollen.
They are made of a semi-transparent material which allows light in, but stops direct sunlight and direct views from neighbours or passers-by looking into your room.
Traditionally available in white to maximise the light let in, they look wonderful when layered with curtains.
Don’t forget they are also available in half window heights – known as café curtains.