This vintage 1991 pack of Southworth envelopes includes 25 pieces made from 100% cotton material. The envelope size is 4.125′ X 9.5′ and has a weight of 24 lb. The envelopes are perfect for businesses and individuals who want to add a touch of elegance to their correspondence. With a classic white color, these envelopes are suitable for any occasion and can add a professional touch to your letters or invitations. The brand, Southworth, is known for producing high-quality paper products that are durable and long-lasting. The model number for this particular pack is R-14-10.