Minigrip White Block Reclosable Poly Bags - 2 Mil Minigrip Premium Red Line bags feature a single track, heavy-duty zipper that 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. • Meets FDA and USDA specifications. • Sizes listed are the inside usable dimensions of the bag.