6" x 9" - 6 Mil White Block Reclosable Poly Bags. Single track zipper extends the width of the bag and keeps products clean and free from moisture. Large white block area allows part numbers or other information to be written with pen directly on the bag. No labels needed! Reclosable bags can be reused. Bags meet FDA and USDA requirements. Sizes listed are the inside usable dimensions of the bag. Available in case quantities.