The cordless cellular room darkening window sun shade is constructed from beautifully textured non-woven polyester fabric of high quality that gently blocks natural light from filtering into the room without sacrificing privacy. The cellular fabric also provides a high level of insulation to stop cold or hot air at your window, saving you money on heating and cooling bills. This blind features a unique durable spring tension device located inside the bottom rail for cordless operation, to operate simply just press the button located on the bottom rail and pull or push. The cordless cellular sunshade is easy to size and install at home, if you need to cut down the shade to fit a window, you can use the included utility knife and sizing tools. The maximum reduction is 18-inches; 9-inches from either side of the shade. The blind is 100% cordless so it is safe for children and pets. Comes in a set of two.