This package of five Slimline Flat Shaker Covers is from Waffle Flower Crafts. These heavy-weight clear acetate sheets have prescored lines for the tabs to wrap around a 3" x 8" cardstock panel with a 3.5:8.5 aspect ratio. For best results, it is recommended you add adhesive to the back of your cardstock, remove the protective film on the front of the acetate sheet, and secure three of the four tabs to the back of the cardstock to form a pocket. You can then add confetti, sequins, die cut shapes, and more before sealing the last tab.