Zip-Top Bags with White Writing Block make labeling bags fast and easy. Writing area accepts pen or marker and covers approximately 60% of the front of the bag. The zipper-type seal makes these bags reclosable and perfect for items that need to be kept fresh and repacked. Single-track zipper closure keeps out dirt and moisture. Bag dimensions are inside dimensions: width x length. Our plastic bags with white block are all FDA and USDA approved for direct food contact.