4" x 6" 4 Mil Clear Zip Lock Reclosable Bags, Pack of 500 Measurements are Width x Height (below the zipper). Thick, 4 Mil clear polyethylene, meets FDA food storage requirements. High Quality Reclosable Ziplock Bag with single track zipper closure All virgin polyethylene film meets FDA and USDA requirements iMBAPrice - Brand Confidence gained from Plastic and electronics