When your team is in the field, your workers need to wear safety vests, or high-visibility vests. These vests are made with highly reflective materials that keep individual workers visible, especially at night. All safety vests are rated and approved by the American National Standards Institute (ANSI). Safety vests are classified as Class 1, Class 2, or Class 3, based on the amount of both reflective material and high contrast (orange or lime color) fabric making up the vest. The degree of reflectivity in the tape and intensity of the background fabric colors are specified in the ANSI standard. The more hazardous your workplace, the more visible your team needs to be.