Astrobrights Color #10 Envelopes, 4.125" x 9.5", 24 lb/89 gsm,"Vintage" 5-Color Assortment, 50 Ct. (20248) 24 lb / 89 gsm envelopes; for everyday and special occasion use Color(s): Solar Yellow, Pulsar Pink, Re-Entry Red, Orbit Orange and Gamma Green 50 Color Envelopes Size: 4.125 x 9.5 (#10 Size) Bright color envelopes are ideal for high-impact correspondence, direct mail, and more