Specification: Zipper Poly Bags Quantity: 200pcs Thickness: 2mil one side Material: low density polyethylene (LDPE) Color of Plastic Bags: clear Dimensions: 2 x 3 in (include zipper part) Closure: reclosable zipper Features: Fine Airtightness - Secure resealable seal of these poly bags with bite-in type concave-convex buckle that will stay firmly closed until opening is required. It's moistureproof and mildewproof, well antioxidative, suitable for storing mental and silver products. Reusable and Durable - These packaging plastic bags are made up of low density polyethylene (LDPE), they?re not easy to slit at the seam. The thickness of each bag is 2mil (one side), you can reuse them for several times. Wide Application - These ziplock bags are available for necklaces, rings, earrings, buttons, cotton rounds, coins, fishing lures, threads for cross stitch, small electronic components, screws and bolts, aroma beads, sinkers, nails, screws, earbuds, dice, jump rings, clasps etc. Package includes: 200 count plastic bags 1 piece of product information card Hard to Open? You can use this easier way to open these small bags: Put pressure at the seal between your thumb and index finger, then slide the seal from different directions. Note: To avoid danger of suffocation, please keep these bags away from babies and children. Please keep these bags from fire and heat source.