The Lemomo Blackout Curtains are made from triple-weave 100 percent polyester to block out natural sunlight. According to the brand, the curtains block out 85 to 99 percent of light and UV rays depending on the color you choose. Not only do the curtains darken a room and provide privacy, they’re also noise-blocking and thermal insulated to keep temperatures cool in the summer and warm in the winter. To buy: From $20; amazon.com. Complete with two panels and durable silver grommets, the set comes in 14 sizes to easily blend into your space. Blackout curtains don’t have to actually be black in order to block out the light, and this set comes in 24 colors to match your bedroom decor. They’re even machine-washable for stress-free cleaning. “I am super sensitive to any form of light in my room when I am trying to sleep,” said another reviewer who added that they work “weird” hours. “These curtains are fantastic, maybe a bit too fantastic as my room was so dark I slept for 12 hours by accident.” To buy: From $20; amazon.com.