Note！: Before buying curtains, please measure your window size and pick the right size for you according to the correct method, there is a video on measuring and choosing the ideal curtain size in this section of the product image. If the size of the curtains is not suitable for your window, it will have a great impact on light blocking, heat preservation and sound insulation. LIGHT BLOCKING: Innovative triple woven textured polyester weighted soft blackout curtain fabric, blocking out 85%-95% light and UV ray(Darker colors work better), you can have a good rest and late sleep,suitable for shift workers, seniors, infants,and computer operators. NOISE REDUCING: The blackout curtains block extra noise from outside to give you a non-disturbing sleep. The solid thermal insulated blackout curtains help to adjust the temperature, they keep out unwanted heat and cold during the summer and winter months, suitable for your bedroom and living room. QUALIFIED CRAFTSANSHIP: Our blackout curtains have no extra thread. The curtain surface is clean, no chemical smell, wrinkle-free, fade-resistant, high durability, environment friendly. With 8 Silver Rings, Inner Diameter is 1.6 inch, fits 1.5 inch rod, Easy to Install. CARE INSTRUCTION: Machine washable on low heat. Iron on low setting as needed. Do not bleach. Tumble dry low. If there are any quality problem, feel free to contact us. CUCRAF, your home curtain craftsmanship.