The product is a pack of 1000 white A9 invitation envelopes with a gum seal, measuring 5-3/4 x 8-3/4 inches. Made in the United States, these envelopes are ideal for shipping and mailing invitations or other formal documents. The gum seal ensures a secure closure while providing a professional look for your correspondence. Perfect for businesses or individuals looking for high-quality envelopes in a convenient and quantity.