JAM Paper® Simpson Kraft 3 1/8 x 3 1/8 Square Invitation Envelopes are made out of smooth, 30% recycled, 24lb paper. There are 100 envelopes in this pack. These envelopes feature a mid-tone brown color that looks great in any setting. At 3 1/8 x 3 1/8 inches in size, these envelopes are perfectly square in shape. Each one features an elegant flap opening with a reliable gum closure to keep the items placed within them secure as they are transported from place to place. These small square envelopes are excellent for small notes that you want to include along with gifts, thank you notes, scavenger hunt clues, and more!