You Are Buying 100 Each 10″x13″ Business Envelopes Kraft Clasp Manilla Catalog Envelopes Yellow Brown Flaps Heavyweight 28lb. Brown Kraft Sturdy Reusable Metal Clasp Reinforced Durable Eyelets Deep Gumming for Secure Seal Made In The USA 15x11x4 5# Shipping Dimensions for 100 Envelopes.