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The Zenlock Child-Resistant system is the first all-paper rigid box solution in cannabis packaging.

About Zenlock

Zenlock is redefining Child-Resistant with simple, beautiful boxes. Three pre-certified sizes cater to a variety of cannabis products.

100% Paper

Zenlock’s lithographic printing is the best way to share your brand story on a completely plastic-free package.


The Zenlock box utilizes a simple drawer container for elegant presentation and a satisfying unboxing experience.

Child Certification

Our all-paper mechanisms are certified under US CPSC 16 CFR 1700.20 and ASTM D3475-17 requirements.

Our Products

Preroll Box

This slender box is designed for large prerolls, vape pens and cartridges.

Vape Box

A medium-sized container for vape pens and cartridges, this box can also hold small preroll sets from standard to king-size.

Large Box

Designed for large preroll sets, this extra large box can hold other large cannabis products including vape pens and edibles.

Design CR with Zenlock

In addition to our certified boxes, Zenlock can help you design and certify packaging specific to your needs.

Contact us
+1 (408) 321-8869

Unlocking Sustainable CR

After months of research, development, and testing, we designed a versatile system that’s both intuitive and safe.

Zenlock was born from our partner packaging company, Zenpack. No stranger to cannabis packaging, Zenpack has been collaborating with California cannabis companies for the past few years. Thanks to our clients and friends in the industry, we became aware of the 2020 California deadline requiring that all cannabis products must be enclosed in Child-Resistant packaging. Once we understood the legislature, we immersed ourselves in the world of Child-Resistant packaging. We talked to our clients, analyzed samples and familiarized ourselves with testing procedures. The results were clear: too much plastic and too many overly complicated CR mechanisms. Our three design requirements also became clear. We were determined to create packaging using only recyclable materials, we wanted an elevated product presentation, and we needed to build a flexible CR system to accommodate diverse and specific needs for cannabis products.

Currently, most Child-Resistant mechanisms on the market are physically and cognitively difficult to operate. While inhibiting children is the goal, physically challenging packaging can affect broader accessibility. In response, we designed human-centered packaging featuring a mechanism that is sensitive and discrete without being physically taxing. After multiple prototypes with simple 2-part opening sequences, we landed on the final Zenlock system that balances graphics and mechanics to be intuitive for adults yet impenetrable to young hands.

The system is designed for key categories in the cannabis industry and easily expands to new product needs. We strategically placed the mechanism and instructional graphics so that the entire box can be used for branding with high-quality print finishes. The rigid box also provides structure and stability, giving weight to the premium goods inside. And every Zenlock box is constructed using post-consumer recycled paper—the industry’s first sustainable CR rigid box system.

In May 2021, Zenlock won Third Place in the Plastic-Free Packaging category of The Dieline Awards presented by Adobe.

Learn about our full suite of CR

Get In Touch

Ask a question, request more info or tell us about your project. We’ll get back to you promptly.

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A full-service packaging provider with the expertise, resources and experience to create beautiful cannabis packages.

A strategic branding team focused on designing cannabis packaging that creates lasting impressions.

Breathe easy with Zenlock

Connect with us to see how easy safe can be.

Contact us
+1 (408) 321-8869