About this item Functional roller blinds: Blackout cordless roller shades can keep out 100% harmful UV rays, keeps the room cool in summer and warm in winter. Fabric is made of 100% polyester, which is eco-friendly and can maintain a long service life. The design of the additional valance also makes the whole curtain more advanced and unique. Control as you wish: The Thermal Insulated Shadescan be controlled to rise and fall by pulling the bottom of the blind by hand. The smooth spring mechanism allows the roller shades to rise and fall silently at a steady adjustable roll-up speed. Safe for children: Cordless design of Sunfree makes this spring roller blind more kid-friendly. You can install these blackout shades in bedroom, kids Room, living room, kitchen and bathroom. Two types of mounting: For Inside Mount - Width: W(window)-0.4"= W(shade) , Suitable for- Dept: D(window) > 3" , Height: H(Window) < 72 ". Easy to clean: You can wipe with a damp cloth to keep the blackout roller shades clean. But please don't put it in the washing machine.