LazBlinds 100% Blackout Roller Shades, No tools No Drill Cordless Blinds for Windows 100% Blackout Roller Shade: Made of polyester fabric coated with blackout backing. Blocking out 100% light for complete privacy, light control and UV protection for bedrooms, children’s rooms and movie rooms. Excellent for deeper and longer sleepers. Customizable Width: Trim it yourself at home for the perfect fit inside or outside your window frame. Easy to install in minutes with No Tools-No drill, screws, or brackets. Great for Renter, Landlord, and Home Buyer. Cordless Blinds for Windows: No tangled cords, safer for child and pets — using included clips to raise and lower shades.