9 x 12" - 3 Mil Slide-Seal Reclosable White Block Poly Bags. Zip top slider, clear plastic bags are easy to close and keep products clean, protect from dirt, dust and free from moisture. Simply slide the lock across the width of the bag to seal. White write-on block area allows for part numbers, dates, or other important information to be written on and is easily visible. The white block eliminates the use for labels. Slider lock zipper reclosable bags with write on white block are great for storing products that need to be accessed many times and reclosable bags can be reused. Bags meet FDA and USDA requirements for contact with food products. Bags are manufactured from 100% virgin, high clarity low density polyethylene (LDPE) film. Sizes listed are the inside usable dimensions of the bag. Select from many different slide seal reclosable poly bag sizes, clear or white block write-on, to fit your packaging, shipping, displaying and storage needs.