100% Polyester Attention: How to Measure for Inside Mount: The shade you order will be the exact size with no deductions. To ensure a proper fit, measure the width of your window at the top, middle, and bottom. For a 34" wide shade, your window should measure between 34.125" to 35" wide, allowing for a snug fit with minimal light gaps. Next, measure the height from the top of the window to the windowsill on the left, middle, and right sides, and use the largest height measurement when placing your order. MATCHING VALANCE & BOTTOM RAIL: Your new roller shade will create a crisp look to any window with the matching 2¾ inch metal valance, which covers all mounting hardware, and bottom rail.All of the hardware you need to mount your shade inside or outside of a window frame is included, along with easy-to-follow instructions. The minimum window frame depth for an inside mount: 3/4 inches for mounting brackets. STRESS-FREE INSTALLATION with HARDWARE INCLUDED: All of the hardware you need to mount your shade inside or outside of a window frame is included, along with easy-to-follow instructions. SAFE for PETS & CHILDREN: The cordless lift system keeps unnecessary cords away from your pets and children. CORDLESS LIFT: Our innovative cordless lift system makes it easy to raise and lower your shade to your desired precise height. Our shade utilizes a pulley system that allows you to pull down or push up the bottom rail to get your desired height.