Bright Color #10 Envelopes - 50 Envelopes (Re-Entry Red) Bright Color #10 Business Envelopes - 50 Envelopes Made From 24lb Bond Bright Color Paper (90 gsm) Measures 4 1/8" x 9 1/2" each Inkjet & Laser Printer Compatible Choose Your Color: Sea Blue / Green / Hot Pink / Orange / Ultra Pink / Red / Ultra Lime / Violet / Yellow