Three sizes available:
4 1/2" x 5 1/2" (Will not fit 4x6 shipping labels)
7" x 5 1/2" (Clear in this size works great for standard 4x6 shipping labels)
7" x 10"
Please note the measurements stated above are the overall dimensions. The usable space inside the envelope will be slightly smaller due to the seam at the edges. The thickness of an object being placed inside will also affect overall fit.