How To Choose Size and Mil Reclosable ClearZip Plastic Bags the right size, thickness, and style of ClearZip reclosable zip locking bags is easy. First determine the size of your content. Usable space inside a ClearZip is measured side to side for width. The length from zipper track to the bottom of the bag.To fit larger, rigid items through the opening, add half an inch to the width of your content. If it is a slider lock, add one and a half inches.  For bulky items or a loose fit, add up to two inches to both dimensions.Plastic bag thickness is expressed in mils. A consumer brand sandwich bag is about 1.5 mil thick. Standard freezer bags are 3 mil thick.2 mil Clearzip bags are the most common thickness and satisfy most applications. Heavier items and products with sharp edges may need a thicker 4 mil bag. Consider a 6 mil bag for the most demanding applicationsNext, choose one of the three Clearzip closure types. The single zipper locking style is the most common bag. The double track bag has a double seal for added security. The Slider-Lock is for applications where repetitive opening and closing are required.Now, with your bag application in mind, there are many ClearZip bag styles to choose from:Whichever Clearzip bags you choose, be assured, that they are made with virgin Low Density Polyethylene, 100% Recyclable, BPA-free, and meet all FDA/USDA requirements for food contact.Choose flexible packaging from International Plastics, with half a century of Proven Experience and Unsurpassed Customer Care. Visit us at or call Customer Service at: (800) 820 4722.Product Reference2 Mil ZipLock Bags: Mil Zip Lock Bags: Mil Zip Lock Bags: Track ClearZip Bags: Lock Bags: Reclosable Bags: