These envelopes are made out of smooth, high quality paper. The size of these envelopes makes them ideal for gift cards and notes that you want to include along with gifts or flowers that you are giving away or special occasions! Each one of these small white envelopes has rounded flap opening with a reliable gum closure to keep the items placed within it secure as it is being moved from place to place.Details:White2.3125" x 3.625"24 lb. (90 gsm)100 envelopesPaper