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Zip Lock Bags - ClearZip®

ClearZip® Zip Locking Bags

ClearZip® by Interplas is America's leading brand of press-to-close zip lock bags because of their construction and durability. We offer a wide selection of plastic ClearZip® zip-top bags that range from small ClearZip® bags to large oversized ClearZip® bags that can be purchased in bulk quantities for further discounts.

ClearZip® Zip Locking Bags at Wholesale Prices!

ClearZip® White Block Bags

ClearZip® White Block Bags

White block zipper Locking bags are perfect for quickly identifying parts and contents. 


2 Mil - Standard Weight

4 Mil - Heavy Weight

6 Mil - Extra Heavy Weight

Shop all White Block Bags

Custom Ziplock Bags

Custom ClearZip® Bags


Print your brand, bar code, etc., in up to 6 colors. Just choose your size, bag style, and artwork or idea, and we’ll do the rest!

Customize Your Bags!

ClearZip® Bags are America's BEST Value in Zip Locking Bags!

Often, we are asked what thickness plastic zip-locking bags we need for different applications. We are happy to help guide you on what to use and provide samples to compare. Use this guide as a starting point for the various thicknesses offered in our stock ClearZip® zipper locking bags. Gauge or thickness is expressed in mils, which is the 1000th of an inch. One mil equals .001”. A standard consumer-brand Ziploc sandwich bag is about 1.4 mil thick. And most consumer-brand freezer bags are 2.4 mil thick. Please Note: Industry standard tolerance for thickness is +/- 10%.

How To Choose Size and Mil Reclosable ClearZip Plastic Bags


Custom Printed Reclosable Zip Bags


ClearZip Locking Bag Thickness: How To Determine Correct Mil


ClearZip Locking Bag Sizes: How To Measure Bags Dimensions


We offer same-day shipping on 300+ sizes and styles of ClearZip® zip lock bags.

Zipper-locking bags are suited for many different packaging applications. Our ClearZip® zipper locking bags offer impressive clarity and durability for just about any need that is out there. ClearZip® zip plastic bags are constructed of 100% virgin low-density polyethylene (LDPE) or polypropylene (PP), where noted. Our plastic zip bags meet FDA/USDA, GMP, AIB, and TSA requirements and Kosher approval for food contact.


Buy bulk zip bags at wholesale prices.

We also offer custom sizes, styles, and custom printing. Printing on zip bags is our specialty! Our ClearZip® bags feature an integrated zipper you press to close to provide a secure, tight seal. Custom-printed zip bags are always available, with custom sizes and other options upon request.


Being a direct importer of wholesale zipper-locking bags, we can make wholesale pricing available, even if you only need one case. These zip bags are extruded and converted at a state-of-the-art factory and are far superior to imported zip-top bags. Looking for excellent quality, superb strength, and low cost? Then you have found the best-imported Zipper Locking Bags anywhere. We even offer a 100% price match guarantee. You may find similar plastic bags with locking zippers from another company. If you do, we will price match and allow you to see our excellent customer service before, during, and after the sale.


Re-sealable, Zip Locking packaging has a variety of uses in many different industries. Our ClearZip® industrial zipper locking bags are much better than consumer-grade brands. Ours are usually thicker and very dependable because of their secure locking top, which provides an excellent way to keep out foreign substances that can compromise your products. Most of our zip bags are made of Low-Density Polyethylene or LDPE plastic film but can also be custom-made to your specifications.


Every business imaginable uses Zip Locking bags in one way or another. Whether industrial, commercial, or residential, you can be assured that a Zipper lock bag is being used. Shipping or organizing small items, holding perishable items and retaining their freshness, preserving paperwork or sensitive materials, candy, hardware, jewelry, wires, appliances, instruction manuals, collectibles, machinery, crafts, pharmaceutical purposes, powders, PDAs, sports equipment, memorabilia, books, CDs, media, writing instruments, bottles, chemicals, cell phones, pottery, liquids, cosmetics and nearly anything else imaginable.


The side of the bag that opens is always in the width dimension. All ClearZip® zip lock bags are measured by the usable inside dimensions (without the zipper or lip included in the overall measurements). No matter what resealable poly bag or open-end poly bag you choose from us, they all meet FDA and USDA specifications for food. Your packaged contents are on display, visible through the clear LDPE. The zip-top seal allows them to be repeatedly closed, opened and resealed. This makes these bags perfect for items that must be kept fresh or repackaged.


It would be difficult to find another more widely used product, no matter by what name you call it. When items need protection and organization, coupled with the need to be repackaged, there is no better solution than International Plastic's ClearZip® Zip Locking Bags.


We are the leading online wholesale supplier of ClearZip® industrial zipper-lock bags. Our ClearZip® Zip Locking bags are not the same as consumer sandwich, storage, and freezer brands marketed to home consumers. Our bags are thicker and much cheaper than consumer-branded bags. For a more significant volume of food storage zip bags, users should try Minigrip Colorzip Institutional Food Service Bags.


PLEASE NOTE: Our industrial Clearzip® zip lock bags are not affiliated with consumer food storage brands like Glad® Flex’N Seal™, Hefty® Slider and Press to Close Bags, or Ziploc® Grip 'n Seal. Ziploc® is a registered brand of SC Johnson & Son™ Inc.

Frequently Asked Questions About ZipLock Bags

Can zip-locking bags be reused?

Yes, zip-locking bags can be reused, provided they are adequately cleaned. However, bags used to store raw meat and oily or smelly foods should be disposed of due to the risk of contamination.

Can zip locking bags be recycled?

Yes, zip-locking bags can be recycled. However, they are usually not accepted in curbside recycling bins and should be taken to a grocery store with a designated plastic bag recycling bin. Before recycling, ensure that the bags are clean and dry.

Are zip-locking bags leak-proof?

While zip-locking bags are designed to be leak-resistant, they are not completely leak-proof. They can effectively contain most solids and liquids but are not guaranteed to hold all substances without leaking, especially when under pressure or overfilled.

Can you freeze food in zip-locking bags?

Yes, zip-locking bags can be used for freezing food. They are designed to provide an airtight seal that helps prevent freezer burn. For the best results, use bags labeled as “freezer bags,” as they are typically thicker than regular storage bags.

Can you boil food in zip-locking bags?

 Some zip-locking bags are made to withstand high temperatures and can be used for boiling food, but it is essential to use bags specifically labeled as safe for high temperatures. Standard zip-locking bags may melt or release harmful chemicals when exposed to high heat.

Are zip-locking bags microwave safe?

Some zip-locking bags are labeled microwave-safe, meaning they can be used to reheat food without melting or releasing harmful chemicals. However, it is essential to leave the bag slightly open to allow steam to escape.

Can zip-locking bags be used in sous-vide cooking?

Yes, zip-locking bags can be used in sous-vide cooking, but it’s best to use bags labeled explicitly as suitable for high temperatures or sous-vide cooking. These bags are designed to withstand prolonged exposure to heat without breaking down.

Are there different sizes of zip-locking bags available?

Yes, zip-locking bags come in a variety of sizes and thicknesses, ranging from small snack-size bags to large storage bags. Different designs are also available, like stand-up bags and bags with easy-open tabs.

Are all zip-locking bags BPA-free?

We do produce BPA-free zip-locking bags, but it is always best to check the packaging information to be sure about any specific product. BPA-free products are generally recommended for food storage as BPA is a chemical that can leach into food and has been associated with health risks.

Can zip-locking bags be vacuum-sealed?

While zip-locking bags are not a substitute for vacuum-sealing bags, some air can be manually removed before sealing to create a somewhat vacuum-sealed environment. However, this method is not as effective as using a vacuum-sealing machine.

Do zip-locking bags expire?

Zip-locking bags themselves do not have an expiration date, but the food stored inside them does. It is important to follow food safety guidelines and consume stored food within recommended time frames.

Are zip-locking bags airtight?

Zip-locking bags are designed to be airtight when properly sealed, which helps keep food fresh by preventing air and moisture from entering the bag.

How do I measure a zip-locking bag for my application?

Bags are measured and communicated in inches as width first, then by length. The Width is measured side to side when the bag is orientated with the opening at the top; the length is measured from the zipper track to the bottom. Please note that the Lip (area above the zipper) is NOT included in the length dimension. For bottom gusset bags, measure the open gusset across and communicate it as W x L + B.G: i.e., 6” x 8”+4”.


Please Note: Industry standard tolerance for size variances is +/- 1/8 inch for both dimensions.

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