【Free-Stop Cordless Spring System】Cordless roller blinds with neat appearance and child safety. It is safe for family with children and pets. Its cordless function is easy to use and peace of mind. Gently pull down and release, the curtain can pop back to the top of the curtain with ease. Hand control can pull the blackout curtain to any position. 【100% Blackout】PQRSHADE roller window shades are designed with a thermal insulated backing that helps reduce heat and cold loss through windows, making it an energy-efficient solution for your home. This feature can help cut down on your energy bills and keep your home comfortable all year round. Also reduces noise and protects your privacy,enjoy a comfortable sleeping. 【Luxury Fabric】High quality Linen Fabric Material are fashion decoration for your home, also with 5 layers of fabric, multifunctional including blackout, Thermal Insulted, UV protection, better Insulation and Protecting Privacy. 【INSIDE & OUTSIDE MOUNT】Inside Mounting cordless roller blinds require a minimum 2" window frame depth. 【Inside mount】The order height you choose is the height of your window.The width you choose for your order is the width of your window - 1/4 inch. 【Outside mount】You choose the order width and height is your window width + 4 inches, height + 4 inches. 【Custom Service】Why Choose PQRSHADE Roller Shades? We have our own fabric factory and roller shade production factory, we can provide different styles of cordless roller shades and various fabrics. Customize your own exclusive roller blinds. And we offer one year Guarantee and 12hours Response for all your question. PQRSHADE Linen Roller shades for windows are made of polyester fabric with blackout shading backing, soft and smooth to the touch. 25mm Roll tube Elasticity Spring System has precision gear and Silent bearing function, making easy control of stop position with gentle push. It has a good shading and heat insulation effect, providing you with a good rest and privacy protection. Please pay attention to the "Size Measurement Guide" and read the size description of manual cellular blinds carefully to avoid the size change after ordering. Please check and confirm after we send you the information.