Excellent Material Made of 100% polyester material fabrics with reinforce thermal insulated coating, feeling soft and smoot. No burrs, wear resistance, and easy to clean.Our blackout blinds block 100% of sunlight and UV rays. The thermal backing reduces the loss of room heat and cold through the windows in winter and summer, helping to reduce your energy bills. New Innovative Design : The cordless design is safer for kids and pets. The cordless roller blinds are more convenient than corded roller blinds. Built-in the robust spring-loaded mechanism, which has passed 5,000 times usual lifting or pulling down tests for each blind, You can stop the shade wherever you want smoothly.