Handy little coin envelopes are ideal for small parts, samples, seeds, enclosures, loose coins and payroll applications. Flaps feature deep gumming for a secure seal. No. 3 coin envelopes are made of sturdy, 20 lb. Kraft stock. #3 (2.5″ x 4.25″) – 20lb – Gummed – Kraft – 500 / Box – Brown Kraft