National Safety Apparel Sizing Guide
A guide to assist Customers to size NSA US garment sizes
NSA Sizing
National Safety Apparel (NSA) measurements are true-to-fit, meaning garments are engineered to correspond accurately to your actual body measurements, while built-in functional ease is added automatically to account for safety protocols and active movement on the job. Because NSA specialises in FR/AR PPE, their definition of a true-to-size fit prioritises safety compliance over fashion aesthetics.
If you are unsure about fit or comfort, order 1 or 2 garments for wear testing and sizing and ensure your team's safety, comfort and compliance before committing to a larger order.
In addition to the NSA DRIFIRE® Size Chart downloads shown on each product page, the following download information will assist when deciding your sizes.
