Contact SI Jacobson Manufacturing

Let’s build what’s next together.

SI Jacobson partners with brands to design and deliver custom sewn cases, thermoformed packaging, and injection-molded components built for performance and sustainability.

We bring decades of experience in design-to-prototype engineering, domestic production, and global sourcing. That means faster launches, steadier supply, and products that meet both your cost and sustainability goals.

Call Our Team: 847.623.1414

Email Us: Sales@sij.com

Get Directions to our facility:
13950 W Business Center Dr.
Lake Forest, IL 60045

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