Stuffitts Original Drying Inserts for Shoes Stuffitts Drying Inserts combine a washable outer foot-shaped fabric form; zippered heel exposes a replaceable insert made of processed natural cedar fill; Components work together to remove moisture and kill odor in athletic shoes High quality construction of both outer layer and inner core using wicking poly micro-fiber fabric treated with soil resistant protection Form-fitted to maximize inner surface area coverage; Works immediately upon contact; Inserts retain form, so shoes keep their shape; Convenient nylon strap keeps inserts and shoes together for storage and travel Washable outer cover; Replacement Insert easily removable from zippered heel; Replacement Insert last 9 - 12 months Dimensions: 9 L x 7 W x 2 H -Inch