What is kilim fabric?

Can you tell me more about kilim fabric? I've heard it's a type of rug or textile, but I'm not entirely sure what sets it apart from other materials. Is it a specific type of weaving technique? What are the origins of kilim fabric? Are there different styles or patterns that are associated with it? I'm particularly interested in the cultural significance and symbolism behind kilim fabric, as well as its durability and maintenance requirements. Can you provide any insight into these aspects?