JAM PAPER #10 Business Premium Envelopes with Button and String Closure - 4 1/8 x 9 1/2 - Black Linen - 50/Pack Color: Black Linen Envelopes Size: #10 (4.13 x 9.5 inches) Quantity: 50 Envelopes per Pack Very versatile envelopes; can be used for invitations, personal everyday mail, bills, invoices, statements, business memos, marketing materials, brochures, small parts, cash, coins, and much more Add a dash of color to an office or school setting. Keep confidential files under stylish cover or send some memorable mail.