Southworth Fine Granite Envelopes, 24LB, Size 10, 25 Count, Gray Fine Granite Envelopes have the look of polished granite with a smooth and elegant feel. These 25 percent cotton, No. 10 envelopes are perfect for correspondence, resumes, letterheads and more. Features a watermarked and security/date-coded design. Made from 75 percent recycled content with 50 percent post-consumer materials. Compatible with laser and inkjet printers. 24 lb.