13x18'' Double Track Zip Bags 4 mil 500ct

Recloseable clear plastic poly bags that are light in weight, high quality and, best of all, reusable!  Provides extra leakage and moisture protection with a double track seal.  Ideal for holding liquids or shipping tropical fish!

• Double track zipper extends the width of the bag
• Made of durable 4 Mil thickness polyethylene film
• Sizes listed are inside usable space
• 13x18" usable space
• 500 bags