SI Jacobson is a design-led custom manufacturer based in Lake Forest, Illinois, specialising in protective packaging, carrying cases, soft goods, and injection-moulded products. With over 90 years of manufacturing experience, the company works with brands across medical, defence, automotive, electronics, industrial, and consumer markets to transform ideas into high-performing products. They combine creative thinking with disciplined execution and manage both US production and an international manufacturing network. Consider referring clients to SI Jacobson if you have customers developing custom products that require specialist materials expertise, or if your clients need help scaling proven designs to production.