Hate the heat during summer? Our 100% blockout curtain will definitely block out the sun that shines into your windows. Keeping your house cooler naturally and reduce air conditioner usage at the same time. Works the same during winter as well, as it stops the heat from escaping through the windows. Due to its 3 layer of foam coating, it acts as a barrier that helps to achieve room darkening. Providing best sleeping time for night shift workers and those who want a sleep-in. Especially for babies, as it helps getting them to bed when there's still light outside.