#10 Regular Envelope - Astrobright - 24# Terrestrial Teal (4 1/8 x 9 1/2) - Business Color Series (Box of 500) A Quantity of 500 - #10 Regular Envelope - Astrobright Terrestrial Teal Made with 24# Astrobright Terrestrial Teal Paper - Standard Gummed Flap. Great for statements, invoices, checks, letters, brochures, newsletters, advertising materials, contracts, and more. This envelope may be sourced from any one of a number of top brands. Ships via UPS Ground