cordless roller shades made of 100% polyester material fabrics with reinforce thermal insulated coating, feeling soft and smooth. No burrs, strong wear resistance, and easy to clean. High shading and make the room more private and quiet also make the living environment more comfortable and livable. The thermal backing reduces the loss of room heat and against cold through the windows in winter and summer, helping to reduce your energy bills.The cordless design is safer for kids and pets. At the same time, it has a good waterproof and dustproof effect, and our roller curtain will not fade and crack during long use time. The cordless roller blinds are more convenient than corded roller blinds. Built-in the robust spring-loaded mechanism, which has passed 5,010 times usual lifting or pulling down tests for each blind, You can stop the shade wherever you want smoothly. Open the roller blind, pull it to the place; Shut the roller blind, you can gently pull the buckle, and the roller blind would automatically close.