The Riverside Company-backed SureWerx, a manufacturer of safety, tool & equipment products, completed the acquisition of Footwear Specialties International, a manufacturer of work boots. Financial terms were not disclosed. “Adding Avenger Work Boots and Nautilus Safety Footwear to our growing, world-class portfolio of SureWerx brands moves us further toward our goal of becoming the global leader in Safety & Productivity. FSI offers an ever-growing range of high-quality, innovative safety footwear for all professional applications. Whether you work in a warehouse, a manufacturing plant, on a construction site, or in the service and utilities sectors, FSI has a proven, solution-based product that not only protects you from injury but also improves your quality of life," Chris Baby, SureWerx CEO.