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. 4 coin envelopes are made of sturdy, 20 lb. Kraft stock. #4 (3″ x 4.5″) – 20lb – Gummed – Kraft – 500 / Box – Brown Kraft