Each envelope in this pack features straight flap with a metal clasp closure, along with an optional gum closure for added reinforcement. In this pack, there an even total of 100 envelopes included! Each one features a sleek and sophisticated jet black color. The appearance of these envelopes makes them great for any home or office need! Details: Black 6" x 9" 100 envelopes Clasp and gum adhesive closure 24lb. paper Smooth texture