Box 12" x 15" x milreclosable poly bags are reusable. Bags are perfect for storage, shipping of small items, retail packaging, hardware, beads, jewelry, hobbies, crafts and more. Bags are perfect for storage. Easy to open and close. Resists dust, dirt and moisture. Durable zipper resists splitting. Recommended for parts distributors, dealerships. Poly Bag Material: Polyethylene. Box 12" x 15" milreclosable poly bags keeps products clean and free from moisture and have a single track zipper which extends the width of the bag.