Columbian CO543 (#3) 2-1/2x4-1/4-Inch Coin Lightweight Brown Kraft Envelopes, 500 Count Envelope is ideal for storing and transferring of coins, jewelry, stamps and other small objects, parts and materials. Durable 24lb opaque brown kraft material provides privacy of contents. Wide seams and a deep, moisture activated gummed seal secures and protects contents. (#3) 2-1/2" x 4-1/4" 500 envelopes