Our cats are destroying our furniture and we need help!

Our 3 cats love to sharpen their claws on our sofa and loveseat, despite the fact that we have multiple scratching posts and boxes around the house. We keep their claws trimmed, but nothing seems to help. Now we need to reupholster the furniture and are aware that some fabrics are more resistant to cat claws and less appealing to cats. Does anyone know more abut this? I would be extremely grateful for help.