NSA Aluminized Thermobest™ LeggingsNSA Aluminized Thermobest Leggings When the job demands maximum protection against radiant heat, the NSA Aluminized Thermobest Leggings deliver. Built for workers in foundries, steel mills, glass plants, and other extreme heat environments, these leggings wrap your lower body in a shield of advanced thermal defense so you can focus on the work, not the heat. Featuring NSA's trusted Thermobest technology with a highly reflective aluminized outer