JAM Paper #10 Plastic Business Envelope with Tuck Flap Closure - 4 1/4 "x 9 3/4" - Smoke Grey - 12/pack Color: Smoke Gray Size: #10 (4.13 x 9.5 inches) Quantity: 12 /pack Envelope features a tuck flap closure designed to keep contents inside secure and organized. Made from smooth translucent plastic. Scratch, water, and tear resistant.