Styles Explained- Sheer window curtains offer little to no warmth or light blocking capabilities. While they are mostly used for decorative purposes, the fabric is durable. They can be utilized as standalone, or along with blinds or curtains of a different material or style. Ultimately, these curtains do not provide a level of privacy. Unlined Window Curtains are crafted with a single piece of medium weight fabric and hemmed for strength and style. Printed with your chosen design on the interior facing side and depending on the darkness of the design, these curtains can block 20-35% of the sunlight. Unlined curtains are used for privacy, as well as complimenting the hues of the room with ambience from outside light only being filtered. Choose unlined if you're looking to enjoy the colors of the print if reducing the majority of the light is not your goal. The Lined Window Curtains, similar in style to the unlined, but an extra white panel is added to the back of the printed panel. Their ability to filter sunlight is greater than unlined panels and sunlight filtration is between 40-50%, varying with the darkness of the design. Also, the second panel provides a sturdier, heavier feel than the unlined curtains and offer privacy. These curtains still interact with the outside light to create a nice ambient atmosphere to a room Room Darkening Curtains, only available in 50x84", use a single panel of higher density fabric and can block up to 80% of the incoming sunlight.