These are the insulating sheer curtains that block cold drafts and excessive heat while still letting daylight shine through. Designed for year-round use, the double-layered sheers help maintain a room’s temperature by preventing thermal transfer through window glass, keeping chilly air out and heat in during winter and preventing an air-conditioned space from baking in hot summer sunlight. Testing by an independent engineering lab found the sheers can reduce energy costs by 30%; they also blocked almost 63% of outdoor noise. Polyester voile topped with antique-brass grommets. Dry clean. White or Ivory. Listed sizes are for one sheer curtain.