These are Crystal Clear Bags® with No Flap or Adhesive. Ideal for art, photo, and stationery under 4x5 inch, will fit a single 3 3/4 x 4 3/4 card nicely, holds 3 1/2 x 4 1/2 inch product up to about 3/8 inch thick when you don't want a flap to get in...