The simple blackout darkening curtains are much thinner and still allows sunlight to enter. Our thicker single layer curtains will block all light and help stop drafts entering through your bedroom and living room while you can get a restful warm sleep or power nap! Your thermal ...The simple blackout darkening curtains are much thinner and still allows sunlight to enter. Our thicker single layer curtains will block all light and help stop drafts entering through your bedroom and living room while you can get a restful warm sleep or power nap! Your thermal insulated panel curtains help you stay toasty and warm during the cold winter nights and cool on long, hot summer days.