JAM PAPER #10 Business Stationery Set - 4 1/8 x 9 1/2 Envelopes & Matching Letter Paper - Navy Blue - 50/Pack Color: Navy Blue Envelope Size: #10 (4.125 x 9.5 inches) | Paper Size: 8.5 x 11 inches Quantity: 50 Sheets of Paper and 50 Envelopes Our stationery packs come with matching #10 envelopes that ensure your mail will always stand out This classic and sophisticated set of stationery is perfect for any correspondence