Microfiber Wool Duster, Unique Patented Item That Attaches To Unger's Connect & Clean System Or Standard Acme Threaded Poles To Clean Those Hard To Reach Areas, The Head Is Bendable To Reach Flat Surfaces Above With A Pole, For Example A Book Shelf, The Product Simulates A Natural Wool Duster, But Cleans 10 Times Better With The Microfiber Sleeve, Microfiber Sleeve Is Machine Washable Without The Use Of Fabric Softeners.