Why are the sides of ANSI/ISEA safety vests closed and not available with expandable elastic?
In order to meet the standards for safety garments set forth by ANSI and ISEA, the safety garment must have continuous areas of retroreflective or combined-performance materials encircling the torso and placed in such a manner to provide 360 degree visibility of the wearer. Gaps in retroreflective, combined-performance, and background materials to enable fastening should not exceed 50mm (1.97 inches) horizontally.