This sheer mesh seed catcher is available in small, medium and large sizes. Washable nylon mesh in 4 colors: green, blue, black or white. Please let us choose the color for you. Heavy duty elastic fit. This sheer guard is made from washable nylon mesh and has a heavy-duty elastic band at the top. Available in assorted colors; fits 8 x 42 -82 .. Nylon Mesh, Elastic: Size: MEDIUM